aFe 49-42008-1 Mach Force XP CAT Back Exhaust System for Dodge Ram 1500 2003-2005 V8-5.7L Produces 15 horsepower and 19 pounds by feet torque Designed for flawless fit and finish The exhaust system is performance tuned Uses factory style bayonett hangers and band clamps for a clean,leak-freeinstallation Polished rolled stainless steel tip for an aggressive look