In 1941, a 4 speed was a 4 speed. The only difference in them was the torque tube setup for smaller trucks and an open end on the larger trucks, plus a COE had a slightly taller shift tower on some models.

The gasket set should be the same and I imagine almost any of the vendors sell them.

Jeff


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