My wife and I have been overlanding for several years now. We started with a RTT and a RAM 1500, went to a Four Wheel Camper and 2500, and then back to a 1500 and are getting a small travel trailer to base camp with. While not specifically a power wagon, I did have a heavily modified 2017 RAM 2500 Diesel. It was on a 3" AEV lift and ran 37" tires with a Four Wheel Camper. The truck had no problem navigating Cinnamon Pass but the switchbacks at the end did require one or two where I had to 3 point it (picture from Cinammon Pass and Padre Island National Seashore). The road was narrow in a few places for such a big truck, but nothing I had an issue with. I never put it into four wheel drive or aired down for Cinnamon as it was very easy. I didn't do Engineers or Imogene as I was worried about height clearance through the tunnel on whichever one has it. With that said, I don't think anything about Imogene or Engineer's is technical and are primarily just flat twisty mountain roads. A 2500 is a big truck and two way traffic got a little dicey in a few parts with mine but nothing that was overly uncomfortable. I have taken mine through Cinnamon Pass and around a handful of areas in Colorado, New Mexico, Texas and Oklahoma. With that said, I sold both the truck and the camper last month and down-graded in size to a RAM 1500 Rebel. It has the rear locker and 3.92 gears and is just so much more comfortable to drive. The 2500 drove like a brick and the tire noise was there for sure. As a daily driver that off-roads a handful of times through the year, I just couldn't take it anymore and wanted a smoother daily driver. I am, so far, very happy with the change. I haven't off-roaded or overlanded the Rebel yet, but expect it to have no problems at all on any of these trails as I don't think any of them need a disconnecting sway bar. Now if you are doing the Rubicon or some of the more hard core rock crawling, the PW will be the better option.
Let me know if you have any questions - best of luck in whatever you decide! My prior trucks below.
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