Check your owners’s manual. What are the maximum trailer
weight and tongue
weight rating?
I agree a dolly would be beter. If the rear wheels and bearings are roadworthy, I think you can get a temporary transport permit in most states. That would solve the
registration problem.
As another option, have you looked into renting a pickup truck at
U-Haul? It looked like the ones at our local lot had hitches.
Of course one could ask why you’re getting an MG... you’ll be spending all your weekends working on it instead of camping!