I'm having a quick break at the moment to do some research and figure out my next move.
In the meantime here's what will eventually be an armoured freight car. I've popped the bogies off so I could get a small screwdriver between the chassis and body to gently ease it off. The hopper will probably end up in the spares box with the lower framework used as the basis for the car itself. I've marked off some 1mm thick plastic card and scored some 2mm planking in it (using the back edge of a scalpel blade) for the siding. More on that later.

And here's a picture of the disassembled oil tanker which will eventually be a flat car. The bogies were pinched off so I could access the screws to release the tank and the lugs on the framework were cut down level to eventually take the planking. I've two options as to the planking, I can either go the coffee-stirrer route or score some 2mm thick plastic card to make 3-4mm boards. Hmm .....

Your thoughts, suggestions and criticisms are always welcome chaps
