[Gearhead999]

Long headers are the ones that go to the bottom of the engine and turn toward the rear of the vehicle. They then go to collectors and if street legal go to an exhaust system.

Shorty headers are what GT Mustangs have been coming with for many years. They exit the engine and terminat where they turn rearward to direct the exhaust gasses rearward. Shorties are like the headers/manifold that a stock GT came with.