The stock exhaust manifolds on your 3V 4.6L V8 are pretty restrictive and won't allow your Mustang GT to make as much horsepower that's easily within its reach. We here at Stage 3 have a huge selection of both long tube and short tube headers that can easily get you plenty of extra horsepower and torque, not to mention an awesome sound. Our headers are manufactured by some of the best exhaust companies in the business, including BBK Performance, JBA, Kooks Custom Headers, Stainless Works, and many others so that you get quality performance hardware that will last for years. We have both long tube headers and short tube headers available, letting you choose whether you want to keep your Pony street legal or go for maximum power and sound. Keep in mind, long tube headers will require a matching shorty mid-pipe and custom tuning to function properly.