quote: Ecoboost with Max Tow package and 3.73 gearing is rated at 11,300lbs towing capacity
Its all about the type of trailer and the weight distrubition. Just because the truck is rated for it doesn't mean there are not good ways and bad ways to tow that much weight. 7K plus gear plus people weight adds up quick. And since it sounds like he is going to be making a lot of trips a year towing that much weight it might be a good idea to save some wear and tear on his truck by helping out the suspension.