Update

This has been standing still for a while. I have all the parts ready to attach to the frame work shown, it's just I need to come up with a decent colour scheme.

The main chassis is an ork trukk, as mentioned. On top of that is some I-strut plasticard and normal plasticard to create the rear bed, then basic styrene tubing for the hand rails and cockpit enclosure.

The back bed is going to be stuffed with parts such as water cans and kit bags. The idea being this is a desert going vehicle and needs to take a lot with it. If I can find a decent place to fit it I want to add a spare tyre, but failing that we'll assume they use that air-can stuff..