Rev up your Mustang GT with our precision-crafted 2015-26 header system, meticulously engineered to unleash maximum horsepower from your 5-liter engine. Don't compromise on performance—choose the pinnacle of header systems available in the market. Renowned for unparalleled quality and unmatched performance, our products elevate your driving experience. Features: Stainless Power - 2 Year Warranty 1-7/8” Primary Tubes 3” Collector with Integrated Merge Spike High Flow Catalytic Converters Choose your Connection: Factory Connection - Fits to Stock Exhaust - 2-1/4” Performance Connection - Fits Stainless Works Catback - 3” Aftermarket Connection - Fits most Aftermarket Catbacks - 3” (May require cutting) Add horsepower and torque with this bolt-on upgrade 304 Stainless construction Smooth mandrel bends optimize exhaust flow Fully TIG welded for strength and beauty