Why don't the dealerships sell a single rear wheel dump truck? Is it merely GVW? I have two f350's with truckcraft aluminum dump inserts. These are my mowing trucks. I'm playing with the idea of selling my dump inserts, taking the pickup beds off, and having dumps custom fabricated for me. I like the single rear-wheel trucks because we do a lot of residential plowing and I feel they are more narrow and nimble which is important. I sometime wish I could hold more volume than the dump inserts, and I know a lot is lost with an insert. We also tend to dent the pickup bed quarter panels when plowing residentially, turning into a driveway and you the side gets pushed in, etc. These trucks don't do any heavy hauling, just light debris in the spring, a little mulch, lots and lots of grass, and then they plow in the winter. Does any know of any negatives to installing a dump on a single rear wheel 350?