Ratech Solid Pinion Bearing Spacer w/ Shims - GM 12 Bolt (Passenger) 91929929 Versatile housing will accept top

Versatile housing will accept top or side mount oil pump mounts

1971-1973 Ford Mustang CID 351 GAS

MSD has a distributor for it

Once that's done

and then induction hardened to Rc48

Ratech Solid Pinion Bearing Spacer w/ Shims - GM 12 Bolt (Passenger) 91929929 Versatile housing will accept topSolid Pinion Bearing Spacer with Shim Pack 12 Bolt GM Axle (Auto)Replaces the stock crush sleeve, eliminates bearing failure, reusable. 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." WRONG! Ratech manufacture all of their shims in house on their own machinery. Ratech uses the absolute finest American made Hardened Shim Stock available.