The transfer case wasn't that hard to remove. I would recommend having a friend help you remove it. Use a tranny jack to help but be advised that it's mounted kinda odd and will probably tilt over when unbolted. It takes a 1 1/8 inch socket to remove the drain plug. If you don't drain it, expect a LARGE spill. It will take 5 quarts of Dex-III fluid to refill it when you reinstall it. My t-case was rebuilt before I bought it. I bought used Detroit Lockers from San Diego Gear and Axle in El Cajon. They did the install

and also put in new seals. They were VERY REASONIBLE when I got the final bill. They get my recommendation.
