Thanks for the input on fuel mileage and all the reviews here. I am pretty much sold on the 6.2 with 3.73 gears. My 05 6.0 diesel has been an excellent truck and I guess I either got lucky or I am educated enough about the engine and maintenance that it's been solid. Problem is in my climate these vehicles rust bad after 13-15yrs and I am thinking of getting rid of it before it's too late. Mileage on my 6.0 is 16mpg with my 80% highway daily usage and 11mpg towing my 8000lb trailer. Seems the 6.2 is around the same or slightly worse.