GSC P-D Ford Mustang 4.6L SOHC 2-Valve Exhaust Valve Guide Stoper Style +.003in OD - Single Throttle Bodies They are particularly useful when

They are particularly useful when running an aftermarket Honda K-Series compatible fuel rail with a stock fuel line

The S1 cams are designed for those running an upgraded single turbo larger than 57mm

then finally

Awesome Sauce QD is safe on every area of the vehicle

each fitting is designed with a flange at the base of the 7/8" hex to help protect against scratching the part the fitting is being threaded into during tightening

GSC P-D Ford Mustang 4.6L SOHC 2-Valve Exhaust Valve Guide Stoper Style +.003in OD - Single Throttle Bodies They are particularly useful whenGSC P D Ford Mustang 4. 6L SOHC 2 Valve Exhaust Valve Guide Stoper Style +. 003in OD Single