I've been debating purchase of a 6,7 with the 68RFE. I see from the Klenger gear calculator that this transmission with 3. 73 gears is really tall in overall gearing in 6th OD. I expect to use 33-34 inch tires on this vehicle and am concerned the end result would be the opposite of peoples experiance with the G56 overall top gear ratio. Too tall and always in 5th. I would be interested in owners impressions of this espesially if you are running a larger tire. I can find numerous 3. 73 trucks that would suit me but am thinking I should hold out for a 4. 10 truck. It would be great if a 3. 73 truck would work as there are lots of them and the deals are good right now. My use is mixed 50% empty 30% pop-up camper 20% camper and boat at around 9000lb. Can you guys enlighten me? Oh yeah I live in Colorado and we have a few hills around here.