Driveshaft question

If you put an a-body 4 speed in the car it is the same length as a 904 or 3 speed trans. If you put an E or B body 4 speed in the car it is the same length as the 727 trans.


Chuck
I've got a 904. Is there anything I should do to the driveshaft in preparation for the 4 speed?

Thanks.