saddlesore take a look at a set of Timbrens.....very simple and will take care of any rear end sag and sway
as far as a weight distributing hitch , I dunno , I have pulled some beastly loads without one but I am not running in mountains
I put Timbrens on my '11 F250 as it sagged with almost any load; both a 7K loaded bumper-pull horse trailer, or a steel 6-horse gooseneck at a weighed GCW of 23K.
The Timbrens helped, but under the gooseneck, they get completely compressed. I'mm probably going to put bags under this truck.
Vince- FWIW, I think you can put bags under your truck and just go anywhere with those weights.
One of the specific
Dodge Truck Forums might be the best place to get good answers.