GMC/Chevy, 1999-2006, 6.0L, Weld/On - Truck Cat-Back Dual Exhaust Kits

This MPI Exhaust Tech. Cat-back for 1999-2006 Chevy 2500, 3500 Gives you the choice of Sound option to fit your style without that drone! While still achieving those huge MPI Performance Numbers, this Weld-on emissions-legal system features all mandrel-bent components, built right here in Montana. This kit fits all wheelbases (2500 and 3500) and includes all parts necessary for the home installer.    Dyno Results: Dyno gains 20 hp and 16 lb-ft at the rear wheels over stock @ 5,000 RPM. Most Vehicles gain 2-4 MPG. These numbers are with zero tuning, vs. the stock truck.   Muffler Options  : MPI Turbo series mufflers are going to have a nice mellow sound    ( VIDEO )    MPI Performance series mufflers are going to be more aggressive-sounding    (VIDEO) Use MPI Turbos Series on Trucks that Pull Big Trailers to keep Nice & Mellow. Quality: MPI Exhaust Kits use the highest quality 14 Ga. Tubing: this extra-thick tubing is proven to last in harsh environments, including road