I just realized my truck has 3.08s in the rearend, I would like to put so 3.73s in it but I would like to know a few things. How did the fuel economy suffer from the change. What size rearend do these trucks have. How much seat of your pants did it pick up? Ive ran 3.73s in a few cars but they have been older and gas guzzlers anyways, but I drive my truck everyday 40 miles each way and would like to still keep my milage pretty good.