Kooks Headers for your 2020+ Shelby GT500 IN STOCK!! 2015+ S550 Kooks 2015+ Ford Mustang GT350 5.2 Complete Competition Exhaust (Headers Green Cat X Pipe Axle Back) Ford Mustang Shelby GT350 2015 2020 Kooks Green Catted X Pipe 3" x 2 3 Kooks Headers & Exhaust 2015+ FORD MUSTANG SHELBY GT350 GT350R OFF Texas 15 20 GT350 kooks catback exhaust SKU: 11546300 2015+ S550 Texas 15 20 GT350 kooks catback exhaust SKU: 11546300 2015+ S550. 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 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 to say that all of our products are handcrafted here in the USA and we are proud to still be independently owned and operated. And don't forget, "Get Kookin with KOOKS!" This Part Fits: Year Make Model Submodel 2015 2020 Ford Mustang Shelby GT350 2015 2020 Ford Mustang Shelby GT350R 2020 Ford Mustang Shelby GT500