23 Degree SBC Stahl Header Flange - 5/16" Thick Mild Steel - for 2" Primaries 1983-pontiac-firebird-esi2278290 * Three-step sealing system

* Three-step sealing system

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

Depending on the needle and seat combination selected

Please call for installation tips if this is your first time to install spherical top mounts

Please look at the photo below

23 Degree SBC Stahl Header Flange - 5/16" Thick Mild Steel - for 2" Primaries 1983-pontiac-firebird-esi2278290 * Three-step sealing systemKooks 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