We have a 2001 F250 Superduty, Supercab, Short bed with a lift. The floor of the bed measures 40" from the ground, the top of the gunnels/sides of the bed measure at 60". We're looking to purchase a four horse head to head trailer, and are concerned that if we make a long distance purchase that the trailer won't fit safely. Any thoughts? Thanks! (this is also posted under trailers... hoping for thoughts from any and all!)