I have towed a Jeep Wrangler Rubicon Unlimited behind both a 29 ft. Class C (460 Ford) and a 32 ft. Class A (Ford V10). The Jeep was modified with custom bumpers, winch, suspension lift, body lift, engine lift, and 30 gallon gas tank. Sometimes it had the soft top on it, sometimes the hard top. No problems going over the Continental Divide with either coach. No, I have no idea what it weighed. (horrors!!) I also used a fixed arm adjustable width towbar on it. $165 at Walmart! (more horrors). No problems there, either, even though "they" say it is just too much trouble!
But, back to the towing...
Now, I tow the truck in my sig., with a fiberglas topper on it, behind the coach in my sig...
Again, several trips over the Continental Divide (if I go West, I eventually go over the Divide, no choice in the matter!). Again, no problems.
No, I don't know what the Dodge weighs. However, I did get a 6000 lb. capacity telescoping towbar from craigslist especially to tow the truck. My old towbar was only 5000 lb. capacity. IMO, the only thing the Roadmaster has going for it is the capacity and it was only $250! I don't like the thing.
This is merely a statement of what I do and have done. It is not intended to be a recommendation that anybody do anything.
the readers will have to make up their own minds.
Good luck.