I sent before I finished!
Try something with a long wheel base like an old Caddy or Lincoln with levelers. Andy (Inland RV) mentioned to me that these models can be pulled by a car when I was ordering axels.
I recall pulling a rather large cargo trailer with my old 61 Killer Fin Caddy on about 1974. It pulled the dually without any problems that I recall, the exception was that the gas milage sucked with that trailer behind us and the gas shrtage had just hit. It was something ridiculus like 60 cents a gallon.
I als recall pulling that same trailer with a Dodge Coronet and the trailer would move the car a bit. Look for some serious V8 and a long wheel base for best results (but get a modern brake controller
Once again...good choice I hope you enjoy yours as much as )or more) than I have enjoyed mine.