The day job had one with a 16' x 80" high by 90" wide cargo box. It spent most of its life parked and simply rotted out, 15 year old truck with 48k on it. The box went on a newer chassis just before we parted ways. Crawl under it and look for rot, at 5600 miles a year that one has spent a lot of time parked. If you like your kidneys where they are do not ever, EVER, drive with it empty. A modest pothole was jarring, the big stuff we had this spring would put you through the roof. The box truck rode nice with about 5000 pounds in it. Around 7000 pounds and you had to turn the wheel 45 degrees before you changed directions and make constant 20 degree or so course correction adjustments (in each direction!) at highway speeds. A new steering linkage only improved that by a few degrees. Any more than about 10 miles in an empty truck was physically painful to endure, in either chassis. The 4 banger is under powered, turbo or not. The auto tranny has odd shift points, I usually shifted ours manually to make it go in traffic. When I opted to let it shift on its own I would frequently have to pump the throttle to discourage it hanging just at the top of a gear. On the plus side, you will be able to two point, if not u turn, what would be tough to 3 point turn in you current ride. That was hugely important for us delivering stuff to rural houses. I could often pull in and turn around where the installers would have to back in their GMC cab and chassis cube vans, sometimes up to a quarter mile off the road.