Ford 5.0L Coyote Header Flange. 3/8" Thick SS. Ports for 2" Primaries. 1983-pontiac-firebird-esi2278290 or softer valving at lower

or softer valving at lower speeds to allow for the tire to remain planted on hot

Meets and exceeds NASA and SCCA time trial 4 point bolt in requirements

the Berserker™ allows for a broader force range curve allowing for strong enough valving to handle higher rate springs

Aluminum alloy main plate and steel alloy bearing holder construction - Tough as a tank

as can occur with certain other brands

Ford 5.0L Coyote Header Flange. 3/8" Thick SS. Ports for 2" Primaries. 1983-pontiac-firebird-esi2278290 or softer valving at lowerKooks Headers and Exhaust has been the leader in the High Performance Exhaust Industry for over 50 Years! Since 1962, Kooks takes pride in offering the best Headers and complete exhaust systems for your street, race and off road applications. We have won hundreds of championships and set countless records in the NHRA, IHRA, NMCA, NMRA, NASCAR, NASA, SCCA and many other racing organizations. Now with three generations of family leadership, we are proud