Nothing unusual about that rear end. Its an Eaton HO52. Its bulletproof but no one makes any parts for it. Mines laying in the shed for that reason. I did a complete rear end swap out to a Dana 60 with a 3.73 ratio for better highway speeds and parts availability


1949 Chevy 3600
1975 W-25 Hurst Olds
1970 GMC 1/2 ton Fleetside
2010 Chevy Silverado