It is a basic swap. The only thing hard is the handling of those units. They are very heavy.
The first thing to do is examine the donor unit. See what the gear ratio of the donor unit is. Some of those are geared real low & wouldn't be good on the highway for a long trip.
Then check the condition of the donor. Sometimes when they sat for a long time they can get water in side & rust some of the parts. Check the pinion brg for play. There is no adjust ment on that one. If it has play it needs replacement. Check for side play in the carrier brgs. A small amount can be adjusted but very much needs a brg. replacement.
To remove the center section, remove the axle shafts. Disconnect the drive shaft. Remove the rear cover. Remove the nuts or bolts from the section & pull it out.
New gaskets are available but you can use RTV.
If you have more questions ask them. There are a lot of guys on this website that know a lot about this stuff.
George
