Superlites are dyno designed and tested for real horsepower gains as well as substantial weight loss. All models are ceramic coated. Superlite mufflers are designed to be "bolt on performance". Every effort has been made to eliminate the need to re-jet, re-calibrate the clutch or cut any holes in the chassis. Installation is quick and in most applications uses the stock mounting springs and hardware. Superlites are designed to exit through the stock hole in the belly pan. If additional mounting parts are needed, they are included. DOES NOT FIT MODELS WITH ADDED REVERSE.