Update on changing the rear end ,(differential)
1 remove the drive shaft (at least the rear 1/2 remember to align the notches when reinstall)
2 install a jack under the rear end ( diff)
3 remove the three bolts that hold the diff.
4 lower and nose dive the diff to the left or right, (hard/push it ) this will let u get the axles out
You may loose a little oil, so have 2 qts ready to replace the oil
5 lower your jack / diff it is out,,
6 now reverse that to install diff back into the car

note ::You do not have to remove any control arms you don't have have your car realigned simple job about 1 to 1.5 hours.