I had 5.14 in my 1 ton, and switched (whole axle) for 4.56, and it was much appreciated.
And I agree that 4.10 would be better unless you live in the hills and haul a lot of stuff.
Grigg
It's definitely a hauler and we have plenty of hills, may have to reconsider this. I use this truck for not only local hauling but also down the highway. It has to be able to do that occasional 300-400 mile road trip and 50-55 mph doesn't really cut it on the highway.