Remove the tail shaft, far easier for the home mechanic. Done it, does not take all that long. Biggest problem in trying to change it with the tail shaft on is the output shaft is there, and the amount of room you have to work in is the thickness of the side of the yoke.
68 GT500
68 1/2 CJ Coupe
MCA# 18519
68 GT500
68 1/2 CJ Coupe
MCA# 18519