Ball joint separator/pickle fork thingies. A pair of big hammers (side striking the steering hubs around the ball joints can pop them free by impact) I know that Gen 1 trucks had 2 different suspension set ups (1/2 ton - 1 ton) and the upper control arm bushes and pivots are different part numbers. Same with the front stabiliser bars and 'D' bushes. Not sure on Gen 2 trucks so make sure there isn't anything weird with part numbers when ordering replacement stuff. The most complicated part is dropping springs and shocks. Need a few jacks and axle stands and blocks of wood as chocks and supports. Don't let anything just fly apart when trying to disassemble the steering hubs. Keep the ball joint nuts on a few turns and support the lower control arms and make sure the brake calipers are hung up out of the way as to allow space to work and ensure they don't get caught up on anything during the process. Safety first!