1-7/8" Header and GREEN Connection Kit. 2009-2013 GM 1500 Series Truck 4.8L/5.3L 1996-pontiac-firebird-esi1593369 While some options will be

While some options will be digressive at lower speeds

You might need to slightly modify that 3rd hole per side to use the included nut and washer hardware

This allows the adjustment range to be tailored to how the vehicle is set-up and how the vehicle will be driven or used for competitive purposes

Dimensions:

Contoured to fit your specific hood curve

1-7/8" Header and GREEN Connection Kit. 2009-2013 GM 1500 Series Truck 4.8L/5.3L 1996-pontiac-firebird-esi1593369 While some options will beKooks 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