No, not from a Saginaw to a Muncie, but a transmission to transfer case adapter and main shaft from a Saginaw 3 speed will work with a Saginaw 4 speed. Quite a few years ago I had a Saginaw 3 speed with a Dana 20 out of a 71 Blazer and I put the transfer case on a Saginaw 4 speed for a woods buggy that I built.
