Found the following:
M211 Series of 2½-ton (6x6) Cargo Truck, including following variants: M215 Dump Truck, M217 Fuel Tank, M218 Light Wrecker, M220 Shop van, M221 Tractor Truck, M222 Water Tank, M135, M135CDN (Canadian variant)
at Products for these Vehicles... (but no pics)
Also found a...