To remove your Diff
Remove Wheels
Remove the mount brackets for the Bumber from the bulkhead.
Remove the Front Skid plate (This is integral to the Truck structure)
Remove the 4 screws that hold the bulkhead to the body plate.
Thread the Drive shaft appart and seperate the Bulkheads
The Diff is now in your hand.
I don't think I have forgoten anything, then again I am at work and My Maxx is at home.
[EDIT]
oops Forgot that is for the rear, for the front you also have to disconnect your stearing pushrods
[/EDIT]