I was wondering what you got for mpg with the gear vendors. I am hoping to get 13 to 14 with my mods.I had a 88 F250 4x4 460 C6 It got 8-9 MPG. I installed a Flow master cat back exhaust, Doug Thorley Headers K&N air filter Flex-a-Lite Electric Fan and punched out the cat. Still got 8-9 MPG. The power gain was nice. When the truck was stock and you stabbed the throttle it would just go, after installing the mods the truck would spin both 33/1250/16.5 BFG All-Terrains and excel. It wasn't till I installed the GearVendor Overdrive behind the tranfer case my MPG went up to 12 MPG. The GearVendor would take the trucks 4.10 and turn them into 3.25.