MBRP 2003-2007 Chev/GMC 2500 HD 6.0L CC-SB Cat Back Dual Split SideOur high flow performance exhaust systems maximize exhaust flow so your engine keeps its cool with lower exhaust temperatures. Your reward will be greater fuel efficiency; more torque; more horsepower; and last but not least a sound that is pure MBRP. This Part Fits: Year Make Model Submodel 2007 Chevrolet Avalanche LT 2005 2006 Chevrolet Corvette Base 2003 2006 Chevrolet Express 3500 Base 2003 2007 Chevrolet Express 3500 LS 2006 2007 Chevrolet