2014 F250 4x4 Super and Cougar "HALF-TON 25RES Mountains???

Agree with others, truck will handle that FW, even in the mts. With the larger tires, you do give up a little gearing from 3.73, and the truck may be a little tall for that size FW. You may have to tow nose-high, an inch or two won't matter. Some FWs do have adjustment on suspension, to raise them, and if it has 16" wheels, that will help too.

Most hitches are adjustable, but you still want to have 6"s of bed rail clearance. You likely don't need a sliding hitch, due to newer FW design.

Welcome to the forum!!

Jerry