do you need the front or rear diff?

rear

There are 3 screws at the very rear top of chassis, they hold the body mount bumper assembly on, remove them and pull the bumper assembly off. Remove the shocks. Now the whole rear assembly should pull off. There are set screws that hold the driveshafts on, remove screws from both axles and the center driveshaft and unattach the shafts from the diff. Now the diff will pull out of the bulks.