https://northernperformance.ca/products/1-3-4-4-tube-full-length-header-350-68-72-d200-doug-s-headers2026-09-15 https://northernperformance.ca/products/1-3-4-4-tube-full-length-header-350-68-72-hi-d200-b-doug-s-headers2026-09-23 https://northernperformance.ca/products/1-3-4-4-tube-full-length-header-fe-390-428-d625s-doug-s-headers2026-09-15 https://northernperformance.ca/products/1-3-4-4-tube-shorty-header-street-rod-universal-d6512-doug-s-headers2026-09-15 https://northernperformance.ca/products/1-3-4-tri-y-header-oldsmobile-motor-home-455-73-d755y-doug-s-headers2026-09-15 https://northernperformance.ca/products/1-3-4-tri-y-header-olsmobile-motor-home-455-73-d755y-b-doug-s-headers2026-09-15 https://northernperformance.ca/products/1-5-8-tri-y-header-truck-small-block-hi-temp-d300y-b-doug-s-headers2026-09-23 https://northernperformance.ca/products/16-bolt-pattern-sap-same-as-port-header-flange-hg9204-doug-s-headers2026-09-16 https://northernperformance.ca/products/2-5-409-stainless-steel-y-pipe-small-block-d901-doug-s-headers2026-09-23 https://northernperformance.ca/products/304-stainless-long-tube-header-260-351w-sbf-d623-ss-doug-s-headers2026-09-23 https://northernperformance.ca/products/304-stainless-long-tube-header-265-400-sbc-1-3-d353-ss-doug-s-headers2026-09-15 https://northernperformance.ca/products/304-stainless-long-tube-header-326-455-1-3-4-d564-ss-doug-s-headers2026-09-15 https://northernperformance.ca/products/304-stainless-long-tube-header-326-455-1-3-4-d569-ss-doug-s-headers2026-09-15 https://northernperformance.ca/products/304-stainless-long-tube-header-326-455-1-3-4-d570-ss-doug-s-headers2026-09-15 https://northernperformance.ca/products/304-stainless-long-tube-header-455-w-ho-sd-ram-d567-ss-doug-s-headers2026-09-15 https://northernperformance.ca/products/304-stainless-long-tube-header-62-67-nova-265-d317-ss-doug-s-headers2026-09-15 https://northernperformance.ca/products/304-stainless-long-tube-header-62-74-various-d451-ss-doug-s-headers2026-09-15 https://northernperformance.ca/products/304-stainless-long-tube-header-62-74-various-d452-ss-doug-s-headers2026-09-15 https://northernperformance.ca/products/304-stainless-long-tube-header-64-72-gm-d3336-ss-doug-s-headers2026-09-16 https://northernperformance.ca/products/304-stainless-long-tube-header-64-75-gm-a-body-d369-ss-doug-s-headers2026-09-15 https://northernperformance.ca/products/304-stainless-long-tube-header-64-77-gm-f-d313-ss-doug-s-headers2026-09-17 https://northernperformance.ca/products/304-stainless-long-tube-header-67-69-f-body-68-d320-ss-doug-s-headers2026-09-15 https://northernperformance.ca/products/304-stainless-long-tube-header-67-69-f-body-68-d323-ss-doug-s-headers2026-09-15 https://northernperformance.ca/products/304-stainless-long-tube-header-67-69-f-body-68-d368-ss-doug-s-headers2026-09-23 https://northernperformance.ca/products/304-stainless-long-tube-header-67-74-gm-a-f-g-d322-ss-doug-s-headers2026-09-18 https://northernperformance.ca/products/304-stainless-long-tube-header-67-87-gm-f-g-d308-ss-doug-s-headers2026-09-23 https://northernperformance.ca/products/304-stainless-long-tube-header-68-74-various-d453-ss-doug-s-headers2026-09-15 https://northernperformance.ca/products/304-stainless-long-tube-header-78-88-gm-g-body-d336-ss-doug-s-headers2026-09-15 https://northernperformance.ca/products/3-bolt-2-1-2-collector-gaskets-cg9005-doug-s-headers2026-09-15 https://northernperformance.ca/products/3-bolt-3-1-2-collector-gaskets-cg9007-doug-s-headers2026-09-23 https://northernperformance.ca/products/3-bolt-3-collector-gaskets-cg9006-doug-s-headers2026-09-16 https://northernperformance.ca/products/8-bolt-pattern-1-3-4-rectangle-port-header-hg9203-doug-s-headers2026-09-23 https://northernperformance.ca/products/8-bolt-pattern-2-2-1-8-rectangle-port-header-hg9203lg-doug-s-headers2026-09-16 https://northernperformance.ca/products/amc-304-40-dog-leg-port-header-flange-gaskets-hg9605-doug-s-headers2026-09-15 https://northernperformance.ca/products/bb-chevrolet-396-502-13-4-2-sap-same-as-port-hg9303-doug-s-headers2026-09-16 https://northernperformance.ca/products/bb-chevrolet-396-572-large-d-port-header-flange-hg9313-doug-s-headers2026-09-15 https://northernperformance.ca/products/buick-350-1-3-4-sap-same-as-port-header-flange-hg9400-doug-s-headers2026-09-16 https://northernperformance.ca/products/buick-400-455-1-7-8-sap-same-as-port-header-hg9401-doug-s-headers2026-09-15 https://northernperformance.ca/products/c10-ls-swap-motor-mount-sk102-doug-s-headers2026-09-23 https://northernperformance.ca/products/c10-ls-swap-trans-corssmember-skc102-doug-s-headers2026-09-23 https://northernperformance.ca/products/chevrolet-348-409-rectangle-port-header-flange-hg9348-doug-s-headers2026-09-15 https://northernperformance.ca/products/chevrolet-ls1-ls6-1-5-8-1-7-8-round-port-header-hg9304-doug-s-headers2026-09-15 https://northernperformance.ca/products/chevrolet-ls7-1-7-8-d-port-header-flange-gaskets-hg9306-doug-s-headers2026-09-15 https://northernperformance.ca/products/chrysler-331-392-hemi-round-port-header-flange-hg9110-doug-s-headers2026-09-16 https://northernperformance.ca/products/chrysler-426-hemi-round-port-header-flange-hg9108-doug-s-headers2026-09-15 https://northernperformance.ca/products/coyote-5-0l-1-7-8-sap-same-as-port-header-hg9247-doug-s-headers2026-09-15 https://northernperformance.ca/products/electric-cut-out-2-1-2-pair-dec250a-doug-s-headers2026-09-23 https://northernperformance.ca/products/electric-cut-out-2-1-2-pair-with-hook-up-kit-dec250ak-doug-s-headers2026-09-23 https://northernperformance.ca/products/electric-cut-out-2-1-2-single-dec250a-1-doug-s-headers2026-09-15 https://northernperformance.ca/products/electric-cut-out-2-1-2-single-with-hook-up-dec250aks-doug-s-headers2026-09-15 https://northernperformance.ca/products/electric-cut-out-2-1-2-stainless-steel-turn-dec250atd-doug-s-headers2026-09-15 https://northernperformance.ca/products/electric-cut-out-2-1-4-pair-dec225a-doug-s-headers2026-09-15 https://northernperformance.ca/products/electric-cut-out-2-1-4-pair-with-hook-up-kit-dec225ak-doug-s-headers2026-09-22 https://northernperformance.ca/products/electric-cut-out-2-1-4-single-dec225a-1-doug-s-headers2026-09-15 https://northernperformance.ca/products/electric-cut-out-2-1-4-stainless-steel-turn-dec225atd-doug-s-headers2026-09-15 https://northernperformance.ca/products/electric-cut-out-3-pair-dec300a-doug-s-headers2026-09-23 https://northernperformance.ca/products/electric-cut-out-3-pair-with-hook-up-kit-dec300ak-doug-s-headers2026-09-17 https://northernperformance.ca/products/electric-cut-out-3-single-dec300a-1-doug-s-headers2026-09-23 https://northernperformance.ca/products/electric-cut-out-3-single-with-hook-up-kit-dec300aks-doug-s-headers2026-09-15 https://northernperformance.ca/products/electric-cut-out-3-stainless-steel-turn-down-dec300atd-doug-s-headers2026-09-22 https://northernperformance.ca/products/electric-cutout-hd-motor-replacement-dec950-doug-s-headers2026-09-23 https://northernperformance.ca/products/electric-cut-out-replacement-dual-wiring-dec6230-doug-s-headers2026-09-15 https://northernperformance.ca/products/electric-cut-out-replacement-single-wiring-dec6231-doug-s-headers2026-09-15 https://northernperformance.ca/products/emissions-legal-header-02-13-gm-truck-4-8-5-3l-d3373-b-doug-s-headers2026-09-15 https://northernperformance.ca/products/emissions-legal-header-02-13-gm-truck-4-8-5-3l-d3373-doug-s-headers2026-09-16 https://northernperformance.ca/products/emissions-legal-header-265-400-sbc-1-3-4-primary-d3330-doug-s-headers2026-09-15 https://northernperformance.ca/products/fenderwell-header-265-400-sbc-1-3-4-primary-3-d355-b-doug-s-headers2026-09-15 https://northernperformance.ca/products/fenderwell-header-265-400-sbc-1-3-4-primary-3-d355-doug-s-headers2026-09-15 https://northernperformance.ca/products/fenderwell-header-265-400-sbc-w-o-egr-a-i-r-1-3-4-d329-doug-s-headers2026-09-17 https://northernperformance.ca/products/fenderwell-header-265-400-sbc-w-o-egr-a-i-r-1-3-d329-b-doug-s-headers2026-09-15 https://northernperformance.ca/products/fenderwell-header-265-400-sbc-w-o-egr-a-i-r-1-d329-ss-doug-s-headers2026-09-15 https://northernperformance.ca/products/fenderwell-header-290-401-v8-1-5-8-primary-3-d190-doug-s-headers2026-09-15 https://northernperformance.ca/products/fenderwell-header-396-502-bbc-engine-swap-2-d352-b-doug-s-headers2026-09-15 https://northernperformance.ca/products/fenderwell-header-396-502-bbc-engine-swap-2-d352-doug-s-headers2026-09-15 https://northernperformance.ca/products/fenderwell-header-62-67-nova-265-400-sbc-2-d365-b-doug-s-headers2026-09-15 https://northernperformance.ca/products/fenderwell-header-62-67-nova-265-400-sbc-2-d365-doug-s-headers2026-09-15 https://northernperformance.ca/products/fenderwell-header-62-67-nova-4-8-6-2l-ls-engine-d366-doug-s-headers2026-09-22 https://northernperformance.ca/products/ford-351-400m-2bbl-head-oval-port-header-flange-hg9215-doug-s-headers2026-09-15 https://northernperformance.ca/products/ford-351c-4bbl-head-square-port-header-flange-hg9265-doug-s-headers2026-09-15 https://northernperformance.ca/products/ford-351w-world-product-head-with-3-center-hg9351-doug-s-headers2026-09-15 https://northernperformance.ca/products/ford-4-6l-4v-sap-same-as-port-header-flange-hg9646-doug-s-headers2026-09-15 https://northernperformance.ca/products/ford-4-6l-5-4l-2v-port-header-flange-gaskets-hg9249-doug-s-headers2026-09-15 https://northernperformance.ca/products/ford-4-6l-5-4l-3v-sap-same-as-port-header-hg9694-doug-s-headers2026-09-15 https://northernperformance.ca/products/ford-5-4-5-8l-4v-sap-same-as-port-header-flange-hg9246-doug-s-headers2026-09-15 https://northernperformance.ca/products/ford-6-8l-v-10-round-port-header-flange-gaskets-hg9208-doug-s-headers2026-09-15 https://northernperformance.ca/products/gm-a-body-ls-swap-motor-mount-sk103-doug-s-headers2026-09-18 https://northernperformance.ca/products/gm-a-body-ls-swap-trans-corssmember-skc101-doug-s-headers2026-09-18 https://northernperformance.ca/products/gmc-c10-ls-swap-exhaust-des102-doug-s-headers2026-09-15 https://northernperformance.ca/products/gm-f-body-ls-swap-motor-mount-sk104-doug-s-headers2026-09-23 https://northernperformance.ca/products/gm-f-body-ls-swap-motor-mount-sk105-doug-s-headers2026-09-23 https://northernperformance.ca/products/header-flange-gaskets-hg9250-doug-s-headers2026-09-15 https://northernperformance.ca/products/large-rectangle-port-header-flange-gaskets-hg9152-doug-s-headers2026-09-17 https://northernperformance.ca/products/long-tube-header-260-302-sbf-w-o-egr-a-i-r-1-5-8-d668-doug-s-headers2026-09-23 https://northernperformance.ca/products/long-tube-header-260-351w-sbf-type-suspension-1-3-d623-doug-s-headers2026-09-23 https://northernperformance.ca/products/long-tube-header-260-351w-sbf-type-suspension-1-d623-b-doug-s-headers2026-09-15 https://northernperformance.ca/products/long-tube-header-265-400-sbc-1-3-4-primary-3-d353-b-doug-s-headers2026-09-15 https://northernperformance.ca/products/long-tube-header-265-400-sbc-1-3-4-primary-3-d353-doug-s-headers2026-09-15 https://northernperformance.ca/products/long-tube-header-265-400-sbc-1-5-8-primary-2-1-2-d315-doug-s-headers2026-09-15 https://northernperformance.ca/products/long-tube-header-265-400-sbc-1-5-8-primary-2-1-d315-b-doug-s-headers2026-09-15 https://northernperformance.ca/products/long-tube-header-265-400-sbc-1-5-8-primary-3-d350-doug-s-headers2026-09-18 https://northernperformance.ca/products/long-tube-header-265-400-sbc-non-cat-no-egr-d334-b-doug-s-headers2026-09-15 https://northernperformance.ca/products/long-tube-header-265-400-sbc-non-cat-no-egr-d334-doug-s-headers2026-09-15 https://northernperformance.ca/products/long-tube-header-326-455-1-3-4-primary-3-d521-b-doug-s-headers2026-09-15 https://northernperformance.ca/products/long-tube-header-326-455-1-3-4-primary-3-d521-doug-s-headers2026-09-15 https://northernperformance.ca/products/long-tube-header-326-455-1-3-4-primary-3-d521-ss-doug-s-headers2026-09-15 https://northernperformance.ca/products/long-tube-header-326-455-1-3-4-primary-3-d564-b-doug-s-headers2026-09-15 https://northernperformance.ca/products/long-tube-header-326-455-1-3-4-primary-3-d564-doug-s-headers2026-09-23 https://northernperformance.ca/products/long-tube-header-326-455-1-3-4-primary-3-d569-b-doug-s-headers2026-09-15 https://northernperformance.ca/products/long-tube-header-326-455-1-3-4-primary-3-d569-doug-s-headers2026-09-16 https://northernperformance.ca/products/long-tube-header-326-455-1-3-4-primary-3-d570-b-doug-s-headers2026-09-15 https://northernperformance.ca/products/long-tube-header-326-455-1-3-4-primary-3-d570-doug-s-headers2026-09-23 https://northernperformance.ca/products/long-tube-header-326-455-2-primary-3-1-2-d522-b-doug-s-headers2026-09-22 https://northernperformance.ca/products/long-tube-header-326-455-2-primary-3-1-2-d522-doug-s-headers2026-09-15 https://northernperformance.ca/products/long-tube-header-326-455-w-o-egr-a-i-r-1-3-4-d590-b-doug-s-headers2026-09-15 https://northernperformance.ca/products/long-tube-header-326-455-w-o-egr-a-i-r-1-3-4-d590-doug-s-headers2026-09-23 https://northernperformance.ca/products/long-tube-header-326-455-w-o-egr-a-i-r-1-3-4-d590-ss-doug-s-headers2026-09-23 https://northernperformance.ca/products/long-tube-header-348-409-w-block-1-5-8-primary-3-d358-doug-s-headers2026-09-15 https://northernperformance.ca/products/long-tube-header-348-409-w-block-1-5-8-primary-d358-b-doug-s-headers2026-09-15 https://northernperformance.ca/products/long-tube-header-348-409-w-block-1-5-8-primary-d358-ss-doug-s-headers2026-09-15 https://northernperformance.ca/products/long-tube-header-351c-4v-cleveland-w-o-egr-a-i-d670a4-doug-s-headers2026-09-15 https://northernperformance.ca/products/long-tube-header-351c-4v-cleveland-w-o-egr-a-i-d670s4-doug-s-headers2026-09-15 https://northernperformance.ca/products/long-tube-header-351c-4v-cleveland-w-o-egr-d670s4-b-doug-s-headers2026-09-16 https://northernperformance.ca/products/long-tube-header-352-390-fe-motor-non-cat-no-egr-d603-doug-s-headers2026-09-15 https://northernperformance.ca/products/long-tube-header-390-428-fe-motor-2-primary-3-1-2-d627-doug-s-headers2026-09-23 https://northernperformance.ca/products/long-tube-header-390-428-fe-motor-2-primary-3-1-d627-b-doug-s-headers2026-09-15 https://northernperformance.ca/products/long-tube-header-390-428-fe-motor-automatic-d625-b-doug-s-headers2026-09-18 https://northernperformance.ca/products/long-tube-header-390-428-fe-motor-automatic-trans-d625-doug-s-headers2026-09-23 https://northernperformance.ca/products/long-tube-header-390-428-fe-motor-w-o-egr-a-i-d626-ss-doug-s-headers2026-09-15 https://northernperformance.ca/products/long-tube-header-390-428-fe-motor-w-o-egr-a-i-r-1-d626-doug-s-headers2026-09-15 https://northernperformance.ca/products/long-tube-header-396-502-bbc-2-primary-3-1-2-d354-b-doug-s-headers2026-09-15 https://northernperformance.ca/products/long-tube-header-396-502-bbc-2-primary-3-1-2-d354-doug-s-headers2026-09-15 https://northernperformance.ca/products/long-tube-header-400-455-1-3-4-primary-3-d741-b-doug-s-headers2026-09-15 https://northernperformance.ca/products/long-tube-header-400-455-1-3-4-primary-3-d741-doug-s-headers2026-09-23 https://northernperformance.ca/products/long-tube-header-400-455-1-3-4-primary-3-d741-ss-doug-s-headers2026-09-15 https://northernperformance.ca/products/long-tube-header-400-455-non-cat-no-egr-or-a-i-r-d743-doug-s-headers2026-09-15 https://northernperformance.ca/products/long-tube-header-400-455-v8-1-7-8-primary-3-d202-b-doug-s-headers2026-09-15 https://northernperformance.ca/products/long-tube-header-400-455-v8-1-7-8-primary-3-d202-doug-s-headers2026-09-15 https://northernperformance.ca/products/long-tube-header-400-455-v8-1-7-8-primary-3-d202-ss-doug-s-headers2026-09-15 https://northernperformance.ca/products/long-tube-header-455-w-ho-sd-ram-air-heads-d568-ss-doug-s-headers2026-09-15 https://northernperformance.ca/products/long-tube-header-455-w-ho-sd-ram-air-heads-d581-ss-doug-s-headers2026-09-15 https://northernperformance.ca/products/long-tube-header-455-w-ho-sd-ram-air-heads-only-1-d567-doug-s-headers2026-09-23 https://northernperformance.ca/products/long-tube-header-455-w-ho-sd-ram-air-heads-only-1-d568-doug-s-headers2026-09-23 https://northernperformance.ca/products/long-tube-header-455-w-ho-sd-ram-air-heads-only-1-d581-doug-s-headers2026-09-23 https://northernperformance.ca/products/long-tube-header-455-w-ho-sd-ram-air-heads-only-2-d523-doug-s-headers2026-09-15 https://northernperformance.ca/products/long-tube-header-455-w-ho-sd-ram-air-heads-only-d567-b-doug-s-headers2026-09-19 https://northernperformance.ca/products/long-tube-header-455-w-ho-sd-ram-air-heads-only-d568-b-doug-s-headers2026-09-15 https://northernperformance.ca/products/long-tube-header-455-w-ho-sd-ram-air-heads-only-d581-b-doug-s-headers2026-09-15 https://northernperformance.ca/products/long-tube-header-4-8-6-2l-ls-engine-swap-1-3-4-d3343-b-doug-s-headers2026-09-15 https://northernperformance.ca/products/long-tube-header-4-8-6-2l-ls-engine-swap-1-3-4-d3343-doug-s-headers2026-09-15 https://northernperformance.ca/products/long-tube-header-4-8-6-2l-ls-engine-swap-2wd-1-7-d314-doug-s-headers2026-09-15 https://northernperformance.ca/products/long-tube-header-4-8-6-2l-ls-engine-swap-2wd-1-d314-b-doug-s-headers2026-09-15 https://northernperformance.ca/products/long-tube-header-5-0l-coyote-engine-swap-1-3-4-d6652-b-doug-s-headers2026-09-17 https://northernperformance.ca/products/long-tube-header-5-0l-coyote-engine-swap-1-3-4-d6652-doug-s-headers2026-09-23 https://northernperformance.ca/products/long-tube-header-5-0l-coyote-engine-swap-1-3-d6652-ss-doug-s-headers2026-09-16 https://northernperformance.ca/products/long-tube-header-5-0l-sbf-1-3-4-primary-3-d6671-b-doug-s-headers2026-09-15 https://northernperformance.ca/products/long-tube-header-5-0l-sbf-1-3-4-primary-3-d6671-doug-s-headers2026-09-16 https://northernperformance.ca/products/long-tube-header-572-bbc-10-2-tall-deck-2-1-8-d359-b-doug-s-headers2026-09-15 https://northernperformance.ca/products/long-tube-header-572-bbc-10-2-tall-deck-2-1-8-d359-doug-s-headers2026-09-15 https://northernperformance.ca/products/long-tube-header-62-67-nova-265-400-sbc-1-5-8-2-d367y-doug-s-headers2026-09-15 https://northernperformance.ca/products/long-tube-header-62-67-nova-265-400-sbc-1-5-8-d367y-b-doug-s-headers2026-09-15 https://northernperformance.ca/products/long-tube-header-62-67-nova-265-400-sbc-stock-d317-b-doug-s-headers2026-09-15 https://northernperformance.ca/products/long-tube-header-62-67-nova-265-400-sbc-stock-d317-doug-s-headers2026-09-23 https://northernperformance.ca/products/long-tube-header-62-74-various-mopar-383-400-b-d451-b-doug-s-headers2026-09-15 https://northernperformance.ca/products/long-tube-header-62-74-various-mopar-383-400-b-d451-doug-s-headers2026-09-15 https://northernperformance.ca/products/long-tube-header-62-74-various-mopar-426-wedge-d452-b-doug-s-headers2026-09-18 https://northernperformance.ca/products/long-tube-header-62-74-various-mopar-426-wedge-d452-doug-s-headers2026-09-22 https://northernperformance.ca/products/long-tube-header-62-74-various-mopar-5-2-6-4l-d4477-doug-s-headers2026-09-15 https://northernperformance.ca/products/long-tube-header-63-66-mopar-a-body-273-360-d454-doug-s-headers2026-09-23 https://northernperformance.ca/products/long-tube-header-63-66-mopar-a-body-273-360-la-d450-b-doug-s-headers2026-09-23 https://northernperformance.ca/products/long-tube-header-63-66-mopar-a-body-273-360-la-d450-doug-s-headers2026-09-15 https://northernperformance.ca/products/long-tube-header-64-67-gm-a-body-4-8-6-2l-ls-d3349-b-doug-s-headers2026-09-23 https://northernperformance.ca/products/long-tube-header-64-67-gm-a-body-4-8-6-2l-ls-d3349-doug-s-headers2026-09-23 https://northernperformance.ca/products/long-tube-header-64-72-gm-a-body-4-8-6-2l-ls-d3336-b-doug-s-headers2026-09-15 https://northernperformance.ca/products/long-tube-header-64-72-gm-a-body-4-8-6-2l-ls-d3336-doug-s-headers2026-09-23 https://northernperformance.ca/products/long-tube-header-64-75-gm-a-body-265-400-sbc-1-3-d369-doug-s-headers2026-09-16 https://northernperformance.ca/products/long-tube-header-64-75-gm-a-body-265-400-sbc-1-d369-b-doug-s-headers2026-09-22 https://northernperformance.ca/products/long-tube-header-64-77-gm-f-a-body-396-502-bbc-1-d313-doug-s-headers2026-09-23 https://northernperformance.ca/products/long-tube-header-64-77-gm-f-a-body-396-502-bbc-d313-b-doug-s-headers2026-09-18 https://northernperformance.ca/products/long-tube-header-67-69-f-body-68-74-x-body-265-d323-b-doug-s-headers2026-09-15 https://northernperformance.ca/products/long-tube-header-67-69-f-body-68-74-x-body-265-d323-doug-s-headers2026-09-15 https://northernperformance.ca/products/long-tube-header-67-69-f-body-68-74-x-body-265-d368-b-doug-s-headers2026-09-16 https://northernperformance.ca/products/long-tube-header-67-69-f-body-68-74-x-body-265-d368-doug-s-headers2026-09-23 https://northernperformance.ca/products/long-tube-header-67-69-f-body-68-74-x-body-396-d319-b-doug-s-headers2026-09-15 https://northernperformance.ca/products/long-tube-header-67-69-f-body-68-74-x-body-396-d319-doug-s-headers2026-09-23 https://northernperformance.ca/products/long-tube-header-67-69-f-body-68-74-x-body-396-d320-b-doug-s-headers2026-09-16 https://northernperformance.ca/products/long-tube-header-67-69-f-body-68-74-x-body-396-d320-doug-s-headers2026-09-23 https://northernperformance.ca/products/long-tube-header-67-69-f-body-68-74-x-body-396-d328-b-doug-s-headers2026-09-15 https://northernperformance.ca/products/long-tube-header-67-69-f-body-68-74-x-body-396-d328-doug-s-headers2026-09-15 https://northernperformance.ca/products/long-tube-header-67-69-f-body-68-74-x-body-4-8-6-d3341-doug-s-headers2026-09-15 https://northernperformance.ca/products/long-tube-header-67-69-f-body-68-74-x-body-4-8-6-d3355-doug-s-headers2026-09-15 https://northernperformance.ca/products/long-tube-header-67-69-f-body-68-74-x-body-4-8-d3341-b-doug-s-headers2026-09-15 https://northernperformance.ca/products/long-tube-header-67-69-f-body-68-74-x-body-4-8-d3355-b-doug-s-headers2026-09-15 https://northernperformance.ca/products/long-tube-header-67-69-f-body-68-74-x-body-572-d321-b-doug-s-headers2026-09-15 https://northernperformance.ca/products/long-tube-header-67-69-f-body-68-74-x-body-572-d321-doug-s-headers2026-09-15 https://northernperformance.ca/products/long-tube-header-67-74-gm-a-f-g-body-bbc-396-502-d322-doug-s-headers2026-09-22 https://northernperformance.ca/products/long-tube-header-67-74-gm-a-f-g-body-bbc-396-d322-b-doug-s-headers2026-09-22 https://northernperformance.ca/products/long-tube-header-67-74-mopar-a-body-273-360-w-o-d455-doug-s-headers2026-09-19 https://northernperformance.ca/products/long-tube-header-67-77-gm-f-g-a-body-265-400-d308-b-doug-s-headers2026-09-23 https://northernperformance.ca/products/long-tube-header-67-77-gm-f-g-a-body-265-400-sbc-d308-doug-s-headers2026-09-23 https://northernperformance.ca/products/long-tube-header-68-74-various-mopar-273-360-la-d453-b-doug-s-headers2026-09-15 https://northernperformance.ca/products/long-tube-header-68-74-various-mopar-273-360-la-d453-doug-s-headers2026-09-18 https://northernperformance.ca/products/long-tube-header-68-76-various-amc-290-401-v8-1-3-d103-doug-s-headers2026-09-16 https://northernperformance.ca/products/long-tube-header-68-76-various-amc-290-401-v8-1-7-d104-doug-s-headers2026-09-16 https://northernperformance.ca/products/long-tube-header-68-76-various-amc-290-401-v8-1-d103-b-doug-s-headers2026-09-16 https://northernperformance.ca/products/long-tube-header-68-76-various-amc-290-401-v8-1-d104-b-doug-s-headers2026-09-15 https://northernperformance.ca/products/long-tube-header-68-77-gm-a-body-396-502-bbc-d331-b-doug-s-headers2026-09-15 https://northernperformance.ca/products/long-tube-header-68-77-gm-a-body-396-502-bbc-non-d331-doug-s-headers2026-09-17 https://northernperformance.ca/products/long-tube-header-70-74-gm-f-body-4-8-6-2l-ls-d3352-b-doug-s-headers2026-09-15 https://northernperformance.ca/products/long-tube-header-70-74-gm-f-body-4-8-6-2l-ls-d3352-doug-s-headers2026-09-23 https://northernperformance.ca/products/long-tube-header-70-81-gm-f-a-body-396-502-bbc-1-d316-doug-s-headers2026-09-23 https://northernperformance.ca/products/long-tube-header-70-81-gm-f-a-body-396-502-bbc-2-d325-doug-s-headers2026-09-15 https://northernperformance.ca/products/long-tube-header-70-81-gm-f-a-body-396-502-bbc-d316-b-doug-s-headers2026-09-15 https://northernperformance.ca/products/long-tube-header-70-81-gm-f-a-body-396-502-bbc-d316-ss-doug-s-headers2026-09-15 https://northernperformance.ca/products/long-tube-header-70-81-gm-f-body-265-400-sbc-1-3-d324-doug-s-headers2026-09-17 https://northernperformance.ca/products/long-tube-header-70-81-gm-f-body-265-400-sbc-1-d324-b-doug-s-headers2026-09-15 https://northernperformance.ca/products/long-tube-header-70-81-gm-f-body-265-400-sbc-1-d324-ss-doug-s-headers2026-09-17 https://northernperformance.ca/products/long-tube-header-70-81-gm-f-body-396-502-bbc-non-d332-doug-s-headers2026-09-22 https://northernperformance.ca/products/long-tube-header-70-81-gm-f-body-4-8-6-2l-ls-d333-b-doug-s-headers2026-09-15 https://northernperformance.ca/products/long-tube-header-70-81-gm-f-body-4-8-6-2l-ls-d333-doug-s-headers2026-09-15 https://northernperformance.ca/products/long-tube-header-70-81-gm-f-body-75-79-x-body-265-d326-doug-s-headers2026-09-15 https://northernperformance.ca/products/long-tube-header-70-81-gm-f-body-75-79-x-body-d326-b-doug-s-headers2026-09-15 https://northernperformance.ca/products/long-tube-header-73-91-gm-truck-265-400-sbc-2wd-1-d310-doug-s-headers2026-09-15 https://northernperformance.ca/products/long-tube-header-75-81-gm-f-body-4-8-6-2l-ls-d3351-b-doug-s-headers2026-09-15 https://northernperformance.ca/products/long-tube-header-75-81-gm-f-body-4-8-6-2l-ls-d3351-doug-s-headers2026-09-15 https://northernperformance.ca/products/long-tube-header-78-87-gm-g-body-265-400-sbc-1-3-d330-doug-s-headers2026-09-15 https://northernperformance.ca/products/long-tube-header-78-87-gm-g-body-265-400-sbc-1-d330-b-doug-s-headers2026-09-15 https://northernperformance.ca/products/long-tube-header-78-87-gm-g-body-396-502-bbc-2-d318-b-doug-s-headers2026-09-15 https://northernperformance.ca/products/long-tube-header-78-87-gm-g-body-396-502-bbc-2-d318-doug-s-headers2026-09-15 https://northernperformance.ca/products/long-tube-header-78-87-gm-g-body-396-502-bbc-2-d318-ss-doug-s-headers2026-09-15 https://northernperformance.ca/products/long-tube-header-78-88-gm-g-body-265-400-sbc-1-3-d336-doug-s-headers2026-09-15 https://northernperformance.ca/products/long-tube-header-78-88-gm-g-body-265-400-sbc-1-d336-b-doug-s-headers2026-09-15 https://northernperformance.ca/products/long-tube-header-82-92-gm-f-body-265-400-sbc-1-3-d3321-doug-s-headers2026-09-23 https://northernperformance.ca/products/long-tube-header-82-92-gm-f-body-265-400-sbc-1-d3321-b-doug-s-headers2026-09-23 https://northernperformance.ca/products/long-tube-header-c-10-4-8-6-2l-ls-engine-swap-1-d3348-doug-s-headers2026-09-16 https://northernperformance.ca/products/long-tube-header-c-10-4-8-6-2l-ls-engine-swap-d3348-b-doug-s-headers2026-09-23 https://northernperformance.ca/products/long-tube-header-various-models-4-8-6-2-ls-d3347-b-doug-s-headers2026-09-15 https://northernperformance.ca/products/long-tube-header-various-models-4-8-6-2-ls-d3347-doug-s-headers2026-09-15 https://northernperformance.ca/products/ls-swap-engine-oil-pan-skop100-doug-s-headers2026-09-23 https://northernperformance.ca/products/mid-length-header-260-302-sbf-1-5-8-primary-3-d665-b-doug-s-headers2026-09-15 https://northernperformance.ca/products/mid-length-header-260-302-sbf-1-5-8-primary-3-d665-doug-s-headers2026-09-23 https://northernperformance.ca/products/mid-length-header-265-400-sbc-1-5-8-primary-2-1-2-d356-doug-s-headers2026-09-15 https://northernperformance.ca/products/mid-length-header-265-400-sbc-1-5-8-primary-2-1-d356-b-doug-s-headers2026-09-15 https://northernperformance.ca/products/mid-length-header-265-400-sbc-w-o-egr-a-i-r-d327-b-doug-s-headers2026-09-18 https://northernperformance.ca/products/mid-length-header-265-400-sbc-w-o-egr-a-i-r-stock-d327-doug-s-headers2026-09-15 https://northernperformance.ca/products/mid-length-header-4-8-6-2l-ls-engine-swap-1-7-8-d311-doug-s-headers2026-09-15 https://northernperformance.ca/products/mid-length-header-64-67-gm-a-body-4-8-6-2l-ls-d3350-b-doug-s-headers2026-09-15 https://northernperformance.ca/products/mid-length-header-64-67-gm-a-body-4-8-6-2l-ls-d3350-doug-s-headers2026-09-23 https://northernperformance.ca/products/mid-length-header-64-77-gm-f-g-a-body-396-502-bbc-d306-doug-s-headers2026-09-23 https://northernperformance.ca/products/mid-length-header-64-77-gm-f-g-a-body-396-502-d306-b-doug-s-headers2026-09-15 https://northernperformance.ca/products/mid-length-header-64-77-gm-f-g-a-body-396-502-d306-ss-doug-s-headers2026-09-16 https://northernperformance.ca/products/mid-length-header-64-92-gm-f-g-a-body-265-400-d304-b-doug-s-headers2026-09-17 https://northernperformance.ca/products/mid-length-header-64-92-gm-f-g-a-body-265-400-d304-ss-doug-s-headers2026-09-15 https://northernperformance.ca/products/mid-length-header-64-92-gm-f-g-a-body-265-400-sbc-d304-doug-s-headers2026-09-15 https://northernperformance.ca/products/mid-length-header-67-69-f-body-68-74-x-body-4-8-d3357-doug-s-headers2026-09-16 https://northernperformance.ca/products/mid-length-header-67-69-f-body-68-74-x-body-4-d3357-b-doug-s-headers2026-09-15 https://northernperformance.ca/products/mid-length-header-67-88-gm-f-g-a-body-265-400-d337-b-doug-s-headers2026-09-15 https://northernperformance.ca/products/mid-length-header-67-88-gm-f-g-a-body-265-400-sbc-d337-doug-s-headers2026-09-23 https://northernperformance.ca/products/mid-length-header-70-81-f-body-75-79-x-body-4-8-6-d335-doug-s-headers2026-09-15 https://northernperformance.ca/products/mid-length-header-70-81-gm-f-body-4-8-6-2l-ls-d3358-b-doug-s-headers2026-09-23 https://northernperformance.ca/products/mid-length-header-70-81-gm-f-body-4-8-6-2l-ls-d3358-doug-s-headers2026-09-17 https://northernperformance.ca/products/mid-length-header-82-92-gm-f-body-265-400-sbc-1-d3320-doug-s-headers2026-09-16 https://northernperformance.ca/products/mid-length-header-82-92-gm-f-body-265-400-sbc-d3320-b-doug-s-headers2026-09-15 https://northernperformance.ca/products/mid-length-header-82-92-gm-f-body-265-400-sbc-d3320-ss-doug-s-headers2026-09-15 https://northernperformance.ca/products/mopar-hemi-5-7-6-1-6-2-6-4l-d-port-header-hg9692-doug-s-headers2026-09-15 https://northernperformance.ca/products/motor-mount-adapter-plate-kit-for-ls1-ls6-gm-sk100-doug-s-headers2026-09-16 https://northernperformance.ca/products/motor-mount-adapter-plate-kit-for-ls1-ls6-gm-sk101-doug-s-headers2026-09-15 https://northernperformance.ca/products/muffler-slip-in-sidemount-glasspack-d950-doug-s-headers2026-09-23 https://northernperformance.ca/products/muffler-slip-in-sidemount-hi-flow-glasspack-d952-doug-s-headers2026-09-23 https://northernperformance.ca/products/olds-400-455-rectangle-port-header-flange-hg9355-doug-s-headers2026-09-23 https://northernperformance.ca/products/oval-port-header-flange-gaskets-hg9211-doug-s-headers2026-09-15 https://northernperformance.ca/products/patriot-header-flange-gaskets-chevy-bb-396-hg9303lg-doug-s-headers2026-09-15 https://northernperformance.ca/products/pontiac-326-455-1-7-8-round-port-header-flange-hg9343-doug-s-headers2026-09-23 https://northernperformance.ca/products/pontiac-326-455-2-round-port-header-flange-hg9343lg-doug-s-headers2026-09-23 https://northernperformance.ca/products/pontiac-326-455-d-port-header-flange-gaskets-hg9342-doug-s-headers2026-09-15 https://northernperformance.ca/products/rectangle-port-header-flange-gaskets-hg9248-doug-s-headers2026-09-15 https://northernperformance.ca/products/sap-same-as-port-header-flange-gaskets-hg9106-doug-s-headers2026-09-15 https://northernperformance.ca/products/sb-chevrolet-283-400-inner-gaskets-header-hg9322-doug-s-headers2026-09-15 https://northernperformance.ca/products/sb-chevrolet-283-400-large-rectangle-port-hg9312-doug-s-headers2026-09-22 https://northernperformance.ca/products/sb-chevrolet-283-400-outer-gaskets-round-port-hg9302-doug-s-headers2026-09-23 https://northernperformance.ca/products/sb-chevrolet-283-400-oval-port-header-flange-hg9301-doug-s-headers2026-09-23 https://northernperformance.ca/products/sb-chevrolet-283-400-round-port-header-flange-hg9300-doug-s-headers2026-09-15 https://northernperformance.ca/products/sidemount-header-265-400-sbc-non-cat-no-egr-d380-b-doug-s-headers2026-09-23 https://northernperformance.ca/products/sidemount-header-265-400-sbc-non-cat-no-egr-d380-c-doug-s-headers2026-09-23 https://northernperformance.ca/products/sidemount-header-265-400-sbc-non-cat-no-egr-d380-doug-s-headers2026-09-23 https://northernperformance.ca/products/sidemount-header-265-400-sbc-non-cat-no-egr-d380-ss-doug-s-headers2026-09-23 https://northernperformance.ca/products/sidemount-header-396-454-bbc-non-cat-no-egr-d381-b-doug-s-headers2026-09-23 https://northernperformance.ca/products/sidemount-header-396-454-bbc-non-cat-no-egr-d381-c-doug-s-headers2026-09-23 https://northernperformance.ca/products/sidemount-header-396-454-bbc-non-cat-no-egr-d381-doug-s-headers2026-09-23 https://northernperformance.ca/products/sidemount-header-396-454-bbc-non-cat-no-egr-d381-ss-doug-s-headers2026-09-23 https://northernperformance.ca/products/side-tubes-corvette-sidemount-polished-304-d930-ss-doug-s-headers2026-09-23 https://northernperformance.ca/products/side-tubes-sidemount-chrome-d930-c-doug-s-headers2026-09-23 https://northernperformance.ca/products/side-tubes-sidemount-hi-temp-black-coating-d930-b-doug-s-headers2026-09-23 https://northernperformance.ca/products/side-tubes-sidemount-metallic-ceramic-coating-d930-doug-s-headers2026-09-23 https://northernperformance.ca/products/skc101-gm-f-body-ls-swap-trans-corssmember-skc104-doug-s-headers2026-09-23 https://northernperformance.ca/products/small-rectangle-port-header-flange-gaskets-hg9151-doug-s-headers2026-09-15 https://northernperformance.ca/products/swap-exhaust-des103-doug-s-headers2026-09-15 https://northernperformance.ca/products/swap-exhaust-des104-doug-s-headers2026-09-15 https://northernperformance.ca/products/swap-mid-pipe-exhaust-adaptor-dmp103-doug-s-headers2026-09-15 https://northernperformance.ca/products/swap-mid-pipe-exhaust-adaptor-dmp104-doug-s-headers2026-09-15 https://northernperformance.ca/products/swap-mid-pipe-exhaust-adaptor-dmp105-doug-s-headers2026-09-15 https://northernperformance.ca/products/tri-y-header-260-302-sbf-1-5-8-2-primary-2-1-2-d662y-b-doug-s-headers2026-09-17 https://northernperformance.ca/products/tri-y-header-260-302-sbf-1-5-8-2-primary-2-1-2-d662y-doug-s-headers2026-09-15 https://northernperformance.ca/products/tri-y-header-260-302-sbf-automatic-trans-1-5-8-d660ya-doug-s-headers2026-09-23 https://northernperformance.ca/products/tri-y-header-260-302-sbf-automatic-trans-1-5-d660ya-b-doug-s-headers2026-09-15 https://northernperformance.ca/products/tri-y-header-260-302-sbf-automatic-trans-1-5-d660ya-ss-doug-s-headers2026-09-18 https://northernperformance.ca/products/tri-y-header-260-302-sbf-r-p-borgeson-or-stock-d661y-b-doug-s-headers2026-09-15 https://northernperformance.ca/products/tri-y-header-260-302-sbf-r-p-borgeson-or-stock-d661y-doug-s-headers2026-09-16 https://northernperformance.ca/products/tri-y-header-260-302-sbf-standard-trans-1-5-8-2-d660ys-doug-s-headers2026-09-15 https://northernperformance.ca/products/tri-y-header-260-302-sbf-standard-trans-1-5-8-d660ys-b-doug-s-headers2026-09-15 https://northernperformance.ca/products/tri-y-header-260-302-sbf-standard-trans-1-5-d660ys-ss-doug-s-headers2026-09-15 https://northernperformance.ca/products/tri-y-header-260-302-sbf-w-o-egr-a-i-r-d690ya-doug-s-headers2026-09-15 https://northernperformance.ca/products/tri-y-header-260-302-sbf-w-o-egr-a-i-r-d690ya-ss-doug-s-headers2026-09-15 https://northernperformance.ca/products/tri-y-header-260-302-sbf-w-o-egr-a-i-r-d690ys-doug-s-headers2026-09-16 https://northernperformance.ca/products/tri-y-header-265-400-sbc-1-5-8-2-primary-2-1-2-d357y-doug-s-headers2026-09-15 https://northernperformance.ca/products/tri-y-header-290-401-v8-1-5-8-2-primary-2-1-2-d1104y-doug-s-headers2026-09-15 https://northernperformance.ca/products/tri-y-header-348-409-w-block-1-3-4-2-primary-2-1-d309y-doug-s-headers2026-09-23 https://northernperformance.ca/products/tri-y-header-348-409-w-block-1-3-4-2-primary-2-d309y-b-doug-s-headers2026-09-15 https://northernperformance.ca/products/tri-y-header-348-409-w-block-1-3-4-2-primary-d309y-ss-doug-s-headers2026-09-15 https://northernperformance.ca/products/tri-y-header-351w-windsor-w-o-egr-a-i-r-1-3-4-2-d669y-doug-s-headers2026-09-15 https://northernperformance.ca/products/tri-y-header-351w-windsor-w-o-egr-a-i-r-1-3-4-d669y-b-doug-s-headers2026-09-15 https://northernperformance.ca/products/tri-y-header-351w-windsor-w-o-egr-a-i-r-1-3-4-d669y-ss-doug-s-headers2026-09-15 https://northernperformance.ca/products/tri-y-header-351w-with-spread-port-pattern-d669y-1b-doug-s-headers2026-09-15 https://northernperformance.ca/products/tri-y-header-351w-with-spread-port-pattern-w-o-d669y-1-doug-s-headers2026-09-23 https://northernperformance.ca/products/tri-y-header-63-91-gm-truck-265-400-sbc-2-4-d300y-ss-doug-s-headers2026-09-15 https://northernperformance.ca/products/tri-y-header-63-91-gm-truck-265-400-sbc-2-4-wd-1-d300y-doug-s-headers2026-09-23 https://northernperformance.ca/products/tri-y-header-64-67-gm-a-body-265-400-sbc-1-5-8-2-d376y-doug-s-headers2026-09-15 https://northernperformance.ca/products/tri-y-header-65-81-various-gm-265-400-sbc-1-5-8-d375y-doug-s-headers2026-09-15 https://northernperformance.ca/products/tri-y-header-68-91-gm-truck-396-502-bbc-1-3-4-2-d303y-doug-s-headers2026-09-15 https://northernperformance.ca/products/tri-y-header-68-91-gm-truck-396-502-bbc-1-3-4-d303y-b-doug-s-headers2026-09-15 https://northernperformance.ca/products/tri-y-header-69-72-gm-truck-265-400-sbc-1-5-8-2-d371y-doug-s-headers2026-09-15 https://northernperformance.ca/products/tri-y-header-69-72-gm-truck-265-400-sbc-1-5-8-d371y-b-doug-s-headers2026-09-15 https://northernperformance.ca/products/tri-y-header-69-72-gm-truck-265-400-sbc-1-5-8-d371y-ss-doug-s-headers2026-09-15 https://northernperformance.ca/products/tri-y-header-69-72-gm-truck-265-400-sbc-2wd-4-d372y-ss-doug-s-headers2026-09-15 https://northernperformance.ca/products/tri-y-header-69-72-gm-truck-265-400-sbc-2wd-4-wd-d372y-doug-s-headers2026-09-15 https://northernperformance.ca/products/tri-y-header-69-72-gm-truck-265-400-sbc-w-o-d372y-b-doug-s-headers2026-09-15 https://northernperformance.ca/products/tri-y-header-78-88-gm-g-body-265-400-sbc-1-5-8-2-d370y-doug-s-headers2026-09-15 https://northernperformance.ca/products/tri-y-header-78-88-gm-g-body-265-400-sbc-1-5-8-d370y-b-doug-s-headers2026-09-15