23 Degree SBC Stahl Header Flange - 5/16" Thick Mild Steel - for 2" Primaries 1983-pontiac-firebird-esi2278290 Depending on the needle and

Depending on the needle and seat combination selected

where the Berserker now gives the street/track enthusiast a “streetable” performance valving that is specific to their specific use and vehicle

Since the Berserker™ series has street use in mind

Please look at the photo below

for high-speed compression adjustment

23 Degree SBC Stahl Header Flange - 5/16" Thick Mild Steel - for 2" Primaries 1983-pontiac-firebird-esi2278290 Depending on the needle andKooks 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