Sounds like a good deal as long as the yard clowns didn't beat it when it was a delivery. I wouldn't try and set it up to haul your rig "on" it though. An F250, even a dually, isn't going to carry that much weight safely. It will tow it no prob though. If you can't find a good deal on a bed you could always build a flat bed for it and add some tool box's for storage.
