Flowmaster Outlaw Cat-back Exhaust SystemThis Flowmaster Outlaw cat back exhaust system is for the 1988 1993 GM 1500 2500 LD 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 Super 10 Series muffler is used for an improved sound level and maximum performance. This system uses dual 4. 5 inch black ceramic coated tips that can exit dual out the rear or dual out the side. The system uses all