I have a brand new 3.55:1 rear ring set and an install kit. The kit does say through 1950. Not sure what the 1951 parts difference is. Send me a private message. Otherwise it is listed in the Parts for sale forum on this site.
Todd

93-512A is the install kit #. Listed 1941-1950.
Maybe someone can confirm the difference of kit 93-512B.
1951 the Driveshaft bushing & seal is different from 1950 and earlier. Others can confirm this?

Good luck.

Last edited by Shaffer's1950; 01/22/2023 6:10 PM.

1950 Chevy 3100