can an A-body tow?
When I rented a car hauler (two axle) from UHaul, it had a surge brake on it - worked fine, and no need for a brake controller.
As to pulling a car behind an A body...I don't know.
Thinking back to when I was a kid, people hauled 2 horse trailers behind the family wagon - in the mountains with no brakes on the trailer (and crappy drum brakes on the car)...but they also went up hill at about 35 MPH (even a VW hippie microbus could pass them).
Longer wheelbase makes for better towing.