A number of years ago I had a 2001 Chevy with the 6.0L gas engine and 3.73's.
We traded up to a 30' 5th wheel and had a trip to Colorado planned that summer. After a few local trips and unhappy with its performance, I paid to have 4.10's put in.
The truck was still under powered IMO, and when my FIL offered to sell me his 97 Dodge with CTD I bought it. I put on some mild mods and I'm still driving it (only 113k miles), and its never been under powered in any terrain.
I wasted money on the 4.10 swap on my truck, and I'm betting you'll feel the same if you do it. I'd get a different truck.
2017 Open Range - Light 297RLS, BX1 Gooseneck
1997 Dodge Ram 2500 CTD LB 4x4