IIRC, I had to undo the motor mounts and jack up the engine in addition to dropping the diff. I believe I just undid the obvious mounting bolts to the diff, and with a jack under it, lowered it down until it was hanging on the axles, then just raised it an inch so all the weight was not on the axles...didn,t take anything else apart...
I'm sure someone will chime in here if I am missing something.