just adding a rear locker (or spool, 100 bux) will blow your mind in added capability and keep it steering/driving good. if you think about it...its not just a 100% traction gain because with a open diff the tire that gets power
is the one you don't need!(jack one rear tire up off the ground and try to drive off,cant)add a locker/spool and viola' off the jack the Lil pink rig comes! I would guess the improvement is more like 400%
then keep them stock wheels, throw some 30X9.50's on em' and a 2" spacer lift you will be amazed!