body lifts are simple, it took about 30 man hours to do mine, 2 guys and 2 long days... air tools i think were very important in mine, the rear bumper brackets were NOT fun to get off, i wouldn't have been able to do it without my impact... i woulda given up... same with some of my body bolts... also, your front body mounts will probably give you a lot of problems DO NOT BREAK THE BOLTS!!!!!!! you are in for a world of hurt if you do!!!!!
but yeah, the lift kit is nylon blocks that go between your body and the body mounts, just take a look under the truck now, they are on the outside of the frame rails, see if the bushings are rotted, and see if the mounts are rusted significantly, replacement of the mounts might be necessary also