Borla 15-16 Ford Mustang Shelby GT350 5.2L ATAK Cat Back Exhaust (Uses Factory Valence)This system features the aggressive ATAK(r) sound and a merge X Pipe for increased performance and improved sound. Tips NOT included, this system utilizes the factory exhaust tip bezels and features. System features valves for the Selectable Driving Mode. Borla(r) Cat Back(tm) and Axle Back exhaust systems feature patented straight through and multi core technology designed to unleash hidden horsepower. Increased exhaust velocity adds power, driving