Any chevrolet or gmc truck with an sm420 newer then 1955 should have the proper rear cover and yoke that you want. They used this tranny through 1967 and even into the 1980s on some larger trucks and military trucks.

Jeff


My 1953 Chevrolet
1947.1 Gallery
1972 C-10 1/2 Ton & 1972 C-30 1 Ton