I have just purchased a F250 to replace my 06 F150 4.6L with 3.55 gears to tow my 09 Surveyor camper. The camper weighs 4500lbs dry but can max out at 7200lbs if I fully load it down which I will never hit that weight. So roughly I would guess it may way around 5500-6000lbs. Any good tips or mods for towing with this truck. The 4.6L would pull it but had to have gas smashed down in hills and would lose speed going up.