Banks Power 99-04 Ford 6.8L Ext/Crw S/D Stinger SystemOptimizes 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