If money was no object, then go for new wheels, axles and all. Often times people want to build a rig in implemental steps. this would allow this person to keep their current wheels/bolt pattern. The older d44 knuckles do not allow for the smaller 5 on 4.5 bolt pattern. Now My jeep has 2 currie hp 9 inch and runs 37 hummmer mtr and hasn't broken...yet. That was just the old in your garage upgrade that will be durable enough for 95% of all trails.