SF58922,  30-Spline Internal Billet Axle Gear Kit, with shot peen treatment and Supra-Fin finishing For use with our ACG-30 case that used a .808" diameter pin. This kit will NOT work in standard Corvette 10 Bolt Posi-Traction  case without machining modifications.  We now offer a  the modification service  required to use the Axle gear kit with the 50245 30 spline axles in a Eaton OEM  type Case. Call 800-525-1963 for information on this service.