Choosing a camper for compatibility (short and long bed)

There really isn’t such a thing as a “3/4 ton camper”.
Any older dually will haul as much weight as a newer one regardless of so-called rating.
For licensing purposes they claimed a 10,000 or 11,000 GVW, not the 14,000 they do now.
But they had the same axles and were plenty stout.

You’d do yourself a big favor to get a dual rear wheel truck. They handle campers so much better.
The camper is already as wide as the dually rear fenders, so why not?