Quick view Kooks Headers Kooks 05-10 Ford Mustang GT 2 1/2in x 2 1/2in OEM Exhaust GREEN Cat H Pipe - 11313600 Compare $1,954.27 $1,758.99 Kooks 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... Add to Cart Add to Cart