CCoffin,
The first thing you need to do is check your hitch rating on the RV. If it’s rated at 10k lbs, I’d follow “Fire Up” advice above and go for it. I have been flat towing my 1996 Chevy suburban 2wd for the past 8 years behind my 2005 Holiday Rambler Endeavor with a 400 hp Cummins engine. Since my suburban is 2wd I had to install a Remco Disconnect kit. I lube the disconnect kit at every engine oil change and have not experienced any problems with it. My tow bar, base plate and safety chains came from Blue Ox and is rated at 10K each. The suburban tows wonderfully behind my RV and stopping is not a problem with or without the exhaust brake activated.
Fitz