make sure the tread on your tires is above the wear bars. If they look thin, and have un-even wear, they might give you grief. Does your reverse lights work? Keep this in mind, "If its installed on your truck, it needs to work" If it doesnt work, then fix it. As far as swappin axles are concerned, why not just adjust the brakes on teh one you have now? Assuming the innards arent completely trashed, getting them to work should be a 12 pack, and a saturdays worth of work.