[MandarinSixSeven]

I made the swap from a saginaw 3-speed to a saginaw 4-speed, and that was an absolute direct bolt in. A muncie on the other hand, from what I have read, has more teeth on the input shaft so you would need a different clutch. The ouput shaft im unsure of, and the length I dont know either. Find out for sure if its a muncie or a sag. You can tell by looking at the side plate: if the reverse lever is on the side plate its a saginaw, if its on the tail shaft its a muncie...hope that helps