As an old truck camper guy, with a speciality in "old campers", I can tell you that The Born Free campers of that vintage and size all had tag axles with suspension. You still see them around here and there. Personally, I agree that it is a waste of camper for the truck. One, you can't tow a boat, etc., and two, they were HORRIBLE to maneuver around in camp grounds, etc. Ya wanna see a huge camper properly fit to one of our old trucks, then look at my gallery at the 11.5' camper I had on burt. The only bigger campers were 12' Eldorados in the 70s, most of which have fallen apart by now...
Dak

 

That thing is a beast.
I hate to flip that thing,I'm sure its very "Top Heavy"!

 

LOL, my first thought was that it *was* a trailer and someone hit the brakes too hard sending it flying into the back of the cab - then said "screw it" and made a camper out of it