[N2TRUX]

I have to agree with jermasaurus that you should have kept the auto. If you drive with a heavy foot at all the 2.73 will get crap for mileage because they don't generate any torque. I have had seeveral trucks with 3.42's and 3.73's. If you want mileage go with 3.42's as the 3.73's will always net you at least 1.5 mpg less.