Can't find a lot on the web. See
http://www.armyvehicles.dk/fwdsucoe.htm for a picture of a FWD SU-COE 5-6-ton 4x4 Cargo Truck. The MAT had a body similar to the AEC Matador tractor. Some more FWD pictures can be found at
http://mil-trucker.narod.ru/FWD.htm.