[Pmedic4]

I have the 6.4 gas, and I was pleased with how it did in the hills around Branson. Yes, it downshifted and the speed dropped to 45-50, but never felt it couldn't do it.

I do wonder about the mountains out west, as we'd like to do a Yellowstone/Glacier trip from the Midwest, so that is on my mind. Even considered getting the 4.10 rear upgrade, with the real negative being that I've heard it will cut gas mileage anywhere from 20 to 50%(!?!), so that really sounds like a bad idea.