To get the 11,300 lbs towing cap in the Ecoboost F-150, you must have the 3.73 rear end AND the MaxTow Package (Code 60M, 60P, or 60C). The literature shows the MTP has tow mirrors, upgrade bumper, & integrated controller over the regular tow pkg. What the lit doesn't say is the MTP has upgraded rear springs. Just adding a controller doesn't do it. Plz add the spring info to the lit!