Alan - we have towed an 8000 lb fifth wheel across America through mountains and deserts with a 2014 Ecoboost super crew with the 3.73 HD tow package without a glitch. U r crazy if u don't get the 3.73 rear end. Forget the trim package and get what works. Love truck, especially when we accelerate up a mountain road passing rvs, motorhomes and trucks...
