I concur with GearHd6. I have a 2011 Ram 1500 CC with the Hemi only with 3.55 rearend and tow a 26TBSS wildwood. Wish I had the 3.92 rear but, it still tows like a champ. On a recent trip to the Tennessee Mtns went up a couple of very steep grades (8 and 6). Only temp that got warmer than I would like is the oil. I run Amsoil so really no big deal. I am however in the proccess of adding an oil cooler so this will not happen again. It has all the other coolers so no problem there.
I love my Dodge trucks as this is the 5th full size that I have owned. The quality gets better every year. Go with the Ram!