The Italeri field work shop is a great starter for your plans. The frame will have to be made longer to sit above whatever tank you will have, but some basic plastic lengths will do for that. YouŽll also need some fine chain.
As it comes with gas tubes and trolley, you have some things being welded onto the back ... typical stowage frame as seen on many WW2 German tanks. This can be painted up as metal and can be painted accordingly, including scorch marks from the welding. It also includes a compressor, so the tank can be getting a field re-spray or camo being added. I often thought of doing this myself.
