Doug's Headers 1 3/4" 4-Tube Full Length D-Port Headers Pontiac Firebird 326-455 67-69 Black

**Requires removal or modification of locking steering columns if equipped.

**Requires a 90 Degree Oil filter housing** 3/8" Thick machined flanges...no warping CNC mandrel bent tubes... accurate fit & better flow Precision formed long transition collectors and long tube design... reduces backpressure and increases higher RPM horsepower Heavy 16 gauge tubing...longer life Tubes are pre-polished to remove scratches and the header is left unfinished (raw steel) for individual customizing