FLOWTECH's emissions-friendly headers are just the ticket for those who want the best of both worlds - top performance and a clean machine. All Shorty Smog Headers bolt on quickly and easily to the factory exhaust system, retaining all stock emissions equipment, and offering maximum horsepower gains plus increased efficiency! Kit comes with 2.25 short down pipe and a 2.5 long down pipe to connect to factory exhaust system. Features: Mandrel-bent tubing for smooth exhaust flow Sturdy 16 gauge tubing Extra thick 3/8 flanges for a leak-free seal Designed as a direct fit replacement for OEM exhaust manifolds Will accommodate all emission control devices Complete with premium gaskets and hardware