When I put a winch to a tree branch to lift the original body off the frame after either cutting or snapping all but one body bolt, the tub fell into 3 pieces... The front fell off, the floors and tailgate fell out and I was left with two back fenders on a roll bar hanging from the tree... It was so bad someone had to lift up on the tail light so I could close my door.
The repairs on my frame have been done with a MIG. I have a friend who has welded other frames for me and he is an artist with a stick welder.
I personally have a small oxy torch, a mapp gas torch, a propane turbo torch and a wire feed flux core (mig) welder for small jobs.
Mike