The Mopar tailgate reinforcement comes off easy. You don't need a spacer because the problem is that you can't pull the tire in close enough to make contact with the tire carrier with an aftermarket wheel. Factory wheel or AEV wheel works fine. Most people have aftermarket wheels with 3.5" to 4.5" Backspacing to support the aftermarket lift. That's why I had to add bump stops to 3 locations where the tire pulls up to the carrier.