BBK 1711 Twin 65mm Throttle Body - High Flow Power Plus Series for Ford 4.6L-4V Cobra, V-10 F-Series, Excursion, Mustang Mach 1 and Bullitt BBK is your Number One Aftermarket Performance Brand in the USA - American Designed and Built High Flow Power Plus Series Twin 65mm Throttle Body Increases Airflow to Improve Horsepower and Throttle Response Over Stock Recommended For Vehicles With More Modifications Have Been Made Especially Superchargers, Nitrous, Intakes and Exhaust All New CNC Machined Casting Assembled with Components that Exceed OEM Standards, They Will Offer Years of Trouble Free Performance Simple Direct Bolt on Replacement for Factory Unit Fits all 96-01 Mustang Cobra, 03-04 Mach 1 and 01 Bullitt and 97-02 F Series and Excursion