Being a short bed truck, size is already limited to short bed campers, which automatically keeps them in the range you can carry on that truck. You should be able to carry whatever camper fits on it.
If it needs a bit of help, airbags or overload spring spacers (Timbrens or similar), a sway bar and some good shocks should have you set to cruise.
2017 Northern Lite 10-2 EX CD SE
99 Ram 4x4 Dually Cummins
A whole lot more fuel, a whole lot more boost.
4.10 gears, Gear Vendors overdrive, exhaust brake
Built auto, triple disc, billet shafts.
Kelderman Air Ride, Helwig sway bar.