You can check out some in-car footage to see how the set up handles:Excellent
FWIW, we have not had axle wrap issues with our spring under set-up; as Rob points out, I'm sure you would if you just removed a leaf. By the time you built a traction bar, you probably wouldn't be any time ahead on doing a SUA conversion.if you had some sort of traction bar or ladder bar then it might be ok, if not you can expect axle wrap, I'd go like the Petty Cash Jeep and do lift springs then go spring under