I'm not going to say this is the way it is because I'm not sure but, the tailshaft may be a different length. It is also possible the shifter comes up in a different spot and you may need to change the shift rail and the rear tail section of the case. Again, I don't know for sure but that may be a difference. If you have access to one, take some measurments. I've seen your handy work, you are a good mechanic =)