This Flowmaster® Flow FX cat-back exhaust system is for the 1996-1999 GM 1500 trucks with the 5.7-liter engine. This system is manufactured using durable 409 stainless steel tubing and is mandrel bent for better exhaust gas flow. A Flow FX Series muffler is used for an improved sound level and maximum performance. This system uses dual 4.0-inch black ceramic coated tips that exit on the passenger side of the truck, just in front of the rear wheel. The system uses all the existing factory hanger locations and includes installation instructions and all necessary hardware for an easy installation that you can do at home. This system fits all single cab and extended cab models in both 2 and 4 wheel drive. Backed by Flowmaster's Lifetime Limited Warranty.