since your truck will be all together, this first idea may not work, but check out how i REMOVED my cab:
http://merlin2.alleg.edu/student/t/t...os/cablift.jpg
i'd say for your purposes, use a floor jack after you have the bolts loose. just make sure you use a plank or block so that you have a bigger area to push up against the cab. the bare cab itself is probably about 400 pounds... probably 1000 w/ the doors and stuff... but you're fenders are bolted as well... but a floor jack should work fine, i'd think.... ask someone who did a lift kit!... they'd know....