99-06 GM P/U Ext Cab SB American Thunder System RADG This 'white whale' of a

This 'white whale' of a product just became easier to locate with Dinan's M2 Free Flow exhaust system that utilizes the factory exhaust valve in concert with Dinan's muffler design to allow for this Jekyll and Hyde ability

5 in Single Tips - Stainless - Black Pro-Series Tips - 6

The reduction in intake air results in an impressive 10 HP and 20 ft-lb of torque gain without any changes in the engine tune

Muffler - Super 40 Series - 3 in Offset Inlet - 3 in Center Outlet - 13

With different shapes

99-06 GM P/U Ext Cab SB American Thunder System RADG This 'white whale' of aExhaust System American Thunder Cat Back 3 in Diameter Dual Rear Exit 3 in Polished Tips Steel Aluminized GM LS Series GM Fullsize Truck 1999 2007 Kit