Yeah, I've got four of the HF wheel dollies that I picked up from a buddy for $50 and they handled my '33 pretty good on smooth concrete. With a 4200# load no dollies are going to be easy to manhandle alone, IMO. Unless you plan to build several cars over the years I would use the economical units, and figure out how to work with them. I've never had to take a hammer to mine, but may in the future....