a suspention lift on a 87 F250 is a piece of cake. should take 2 people no more than 6 hours with beer breaks.
the 2 hardest things are the pitman arm, and if you have to change them, the soft brake lines.

the body lifts are the pain in the ***. they require radiator shroud modification, new hard brake lines, all new body bolts, shifter modifications, sheet metal modifications, electrical system modifications, and steering column modifications to name a few things. figure 16-25 hours solid work to do a body lift.