I've been looking at Pickups pulling an enclosed trailer... and I have been looking at the Isuzu with a box. Then I saw this 16 'Rockport Parcelport unit, with a sliding side door, on a Ford E-350 chassis. GVW of 11,500 lbs. Ground to floor height is 21.5 " Internal height about 6 1/2 feet, with a fiberglass translucent roof. If I could get Rockport to modify it with an internal beavertail, and a full width overhead door... at least for my use, it would be near perfect for a couple of Walkers etc. I don't have a price on the unit yet... Any ideas or suggestions?