We towed a Jayco Eagle SuperLite HT 26.5 RLS with a 2011 Ram Diesel Crew Cab long-bed and a 3.42 rear end. Was not happy with the lack of "oomph" but the truck pulled it fine. Decided, for various reasons to get a different truck so went with a 2012 GMC D/A crew cab short-bed with 3.73 rear end gears and there was a world of difference towing the FW. While you might be a bit over the "optimum" pin weight, I would say go for it. The auto and 3.73 in your Ram will do a great job pulling that FW and you shouldn't have a problem at all as you probably don't have the de-rated diesel Ram I had, due to the six-speed manual transmission.