I have a Northstar 850SC that weighs about 2600 wet. I had it on a 2013 6.0 GMC 3500 long bed crew cab. It drove and handled perfectly.
I upgraded to a 2019 6.0 GMC long bed crew cab. The camper does not even activate the overload/bump stop.
The truck handles fine. It has plenty of power and does everything that I could ask of it. High elevation does not seem to affect it.
Sure, a dually would give you a margain of error with the rear tires, but it also adds to the expense and a much rougher ride.
Keep good tires on the SRW and you should be good to go.
