Just wait till you pull the t-case. That little thing is heavier than the trans.
If you have the drum brakes, make sure you get that little spacer block in the center of the diff, into the middle of the locker. Made that mistake on my buddies 95 when we swapped centers between our trucks. Mine has rear disc, his had drums. He wanted my LED, I wanted his open for a locker. We made the swaps in my driveway the night before a week in Moab. Didn't realize that little block needed to be removed from his center and put into mine that was going into his truck. 4 hours down the highway, stopped for fuel and found the right axle seal in his truck died. Got to Moab, replaced the seal and bearing in camp, and a couple days later was leaking again. Got home, replaced seal and bearing again, installed the block and problem never came back.
Such fun.