Well, i'm not sure about it handling the weight of a car hauler, however my 1 ton Dually came with a nifty little gadget on the rear bumper that allows a ball hitch to bolt into place. It will be perfect for smaller trailers and stuff without the commitment of a frame mounted receiver
with the ball removed With the ball attached In the end, it may not be the best for what you want, however i am just helping you explore your options (Like the title suggests)