Optimizes airflow, air density, continuous power & MPG. Honors the host vehicle & improves longevity. Total Power System for Towing & Work.(1999-2004 6.8L) An economical alternative to the PowerPack, Stinger works hard and plays hard. Rear-wheel gains up to +35 hp and +42 lb-ft, 5 percent more MPG. 1999-2004 6.8L Super-Duty Pickup: Banks Stinger is an economical alternative to the PowerPack, producing rear-wheel gains to +35 hp, +42 lb-ft torque and 5 percent better mileage. Hauling a payload or big toy? Stinger has the substance to tackle many heavy-duty jobs, and makes play-time a lot more fun, too. Gasoline: 6.8L (V-10), 1999-2005. Test vehicle: 1999 Ford F-350 crew cab dually, 6.8L Triton V-10, 4R100 4-speed automatic, 4.10 rear axle ratio, 7500 lbs solo weight, 20,000 lbs combined towing weight. Horsepower and torque measured at rear wheels. Systems do not fit 2005 (3-valve) vehicles designated by a V in the 8th position of the VIN number.