Originally Posted by Pre '68 Dave
The front yoke does not interchange. The rear shaft of the two transmissions are different.

One last question…..is the “bell” that seals the torque tube to the transmission the same for both 3spd and 4spd…..or will I need to replace it too?

Care taker of a 1946 1/2 ton. Pretty much period correct original. Danny T, from B’ham, Al