Ratech Complete Ring & Pinion Installation Kit - GM 7.5" 77-81 3552024-156- S Includes Friction Modifier PN CM-19546-A1Ford

Includes Friction Modifier PN CM-19546-A1Ford Racing offers a variety of products for hard core racing and street vehicles

Designed for the center-hung-style "race" fuel bowl

Fits trucks with factory truck arms and coil spring rear suspension (unique frame for rear coil springs)

Will work on all Cast Aluminum GM HEI distributors

while still absorbed road noise and engine vibrations

Ratech Complete Ring & Pinion Installation Kit - GM 7.5" 77-81 3552024-156- S Includes Friction Modifier PN CM-19546-A1FordComplete Installation Kit GM 7. 5" (77 81) AxleContains Pinion Shims, Carrier Shims, Crush Sleeve, Pinion Seal, Pinion Nut, Ring Gear Bolt Set, Cover Gasket, Pinion Bearings, Carrier Bearings, and Marking Compound. (Image typical Kit may vary from image but will contain appropriate parts) Ratech wants all racers to know about The Myth that "All Shim Packs in the market are the same. They're just washer shaped steel that come in different thickness."