Try this gasket, Fel-Pro #RDS 5049

Its for the standard 1 1/2 to 2 ton rear ends. Im not quite sure if the 2 speeds used a larger size or not.

Good luck, Jeff


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