Affordable Stinger pumps up the volume to level most hills and expedite highway merging. Best gains of +45 hp and +57 lb-ft (rear wheel), and 7 percent more MPG. Pump up the volume at with Banks affordable Stinger. Best gains of +45 hp and +57 lb-ft torque levels most hills and expedites highway merging. Pass by more fuel stations with Stinger's 7 percent mileage improvement. Important: Some vehicle configurations require an extension kit for proper fit. Motorhome Power. Gasoline: Ford 7.5L (460) Class-A, 1982-1998. Test vehicle: Non-catalytic converter equipped Class-A motorhome. Transmission: Ford E4OD automatic. Weight: 16,650 lbs. Horsepower and torque measured at rear wheels. To determine if catalytic converter is present, look under coach, passenger side. Catalytic converter has 4-bolt flange on its inlet connection to Y-pipe. Chassis manufacturer: This system fits the Ford chassis only, not the John Deere/Oshkosh. Exhaust extension kit required for longer wheelbases (over 178 inch). Measure wheelbase length from center front wheel to center drive wheel. Stinger Bundle, Power System for use with 1993-1998 Ford 460 Class-A Motorhome, Driver-Side Exit Key Features: Optimizes airflow, air density, continuous power and MPG Honors the host vehicle and improves longevity Best gains of +45 hp and +57 lb-ft (rear wheel) 7 percent more MPG CHROME tip 50 State Compliant CARB E.O. D-161-112, D-161-84, D-161-80