I am currently running 3.73's with 4.0L/3 spd/33's, as such I really need to make the jump to 4.10's. But living in flat land, it isn't killing me. I ran 3.73's (b/c they were stock in our Jeep) with 31's for a long time and had no complaints. IMO, you should make the jump to 3.73's, as the...