Our 460 is '89, we pull a thirty foot trailer and haul about 18000to 22000 pounds of livestock on it. We climb big hills in fifth. One guy who brought replacement gilts to us was driving a newer model one tonwith a v10 and he said it has not enough power to pull hills in fifth. he was only hauling 12000 pounds, a powerstroker may have expensive gas butmy friend has a 95 with superchipand twin turbo so he has all the power you would ever need and he gets 22-24 mpg.