i did one in a 93 two weeks ago, took about 4 hours, and it was the first one we had done, so it was not bad. Really not that hard of work.
One thing the thread we read did not say was jack the jeep up as far as your floor jack will let you, put stands under the uniframe behind the tires, take the tires off, and the track bar, remove nuts from top of shocks, and stand on front hubs, this will get that axle down far enough to get the pan off with out having to jack the motor up.