Goat, No Taboo at all. Ask anything you want, that's why we have forums. The gear change is something I should of done right after the larger tires and heavier flatbed went full time. It put the truck back into stock range, with the haver weight. MAde it a lot happier, that being said these 6.0's are not mileage machines by any means. My brother and I both have the 6.0. I added a cold air intake, chip and dual exhaust after the regear im still getting 10ish around town or towing, 12 on the freeway but have had a few trips where I got 14 on the freeway. He also gets pretty much 10-12 all the time w/o the chip and intake but also regeared the same.