10- GM P/U 4.8/5.3L Cat Back Exhaust System Cam & Crank Pulleys DINANTRONICS Sport Maximum Gains (N38):

DINANTRONICS Sport Maximum Gains (N38): Up to 20 HP

Regardless of the function the size of the hole still represents a restriction of intake air-flow

DINANTRONICS Sport Maximum Gains (M57): Up to 40 HP

Without hearing it you would never know an aftermarket exhaust was on the vehicle as the design utilizes the stock cutouts in the rear bumper and not aftermarket tips which leave the elegant and seamless styling of the sedan intact

10- GM P/U 4.8/5.3L Cat Back Exhaust System Cam & Crank Pulleys DINANTRONICS Sport Maximum Gains (N38):Exhaust System Sport Cat Back 3 in Diameter 4 in Tip Stainless Natural GM LS Series GM Fullsize Truck 2010 13 Kit