Gravel boxes for your King Hauler

[skeeter]

During this winter, since it'll slow down for us that work for companies that primarily pave, in WA state, I plan to build a King hauler, & customize it to a dump truck. What would be the cost, to have you fab a dump bed that's a SUPER SOLO box? I'd like said box to be equipped with hydraulic arms for the rear Axle, AKA MAXLE, &/or STRONG ARM, depending what company manufactured it.

Here in Washington State, we can legally gross 82,000 on 7 axle super dumps, versus the 65,500 with a conventional 3 axle truck. The alternative, 105,500 with a truck & pup combination that has 8 axles, netting around 32ish tons of product. Since the SUPER DUMPS can generally net 24-25ish tons of product, NOT have to drop & hook a trailer each round to dump asphalt into the paver, & can do 3 round trips to the truck & pup's 2 rounds, they make sense for companies here.