I have been towing with a 2007 Megacab 1500 with a 5.7L, 4.10 gears, for about 5 years now. It has 3/4 ton running gear and suspension, I slide in the camper (2000 lbs loaded,) and pull my prerunner on a trailer (5500 lbs) averaging 8.5-9.5 mpg fully loaded. As far as power goes I haven’t had...