I'm assuming he's using a D60? Biggest problem will be all the work and mainly just finding all the pieces. Like said above, an RSK will help. There'll already be a hole in the floor where the TC shifter goes, just need to pull the rug and pop out the cover. He'll need:
axle (including track bar and bracket)--CHECK gear ratios to make sure they're the same
TC, TC crossmember, and shift boot--check to make sure the wiring harness for the TC is there, may or may not be
trans (4x4 is longer)
trans crossmember
brake lines front/rear
Front shock towers (or make your own mounts)
pitman arm (from F250 or 350, they're both the same)
both driveshafts
Rear 4x4 blocks (2" for F250 and 4" for F350)
Front/ Rear Shocks
Cut out the 2wd pivot bracket
Holes for the Trans and TC support should be there IIRC, as well.