Hooker continues to push the boundaries of performance with the BlackHeart line of exhaust products. We are proud to offer these 304 stainless steel full length headers for 2015-2017 Mustang Shelby GT350/GT350R vehicles. These headers feature 1-7/8" tuned length primary tubes w/ 3" collectors, and are engineered to offer both premium fitment and maximum performance from your 5.2L engine.