Spork; I'd pass on doing that work for him. If his rig has 35's with a built 360 in it...and he's wanting a cheap roll-bar made of exhaust pipe? I'd say he's not very experienced and could get himself into trouble REAL quick and may need a solid roll-bar. When it folds like aluminum foil, and it will, he's gonna look at you.
Also, nobody "plans" on putting thier Jeep on the roof. It just happens!!!