There are three ways to do the chassis use a brass chassis already cut or a Finescale 360 (hard to find) or get a piece of 3mm brass and cut your own. The brass chassis already cut is worth hunting down. I bought one and used it as a template for a couple more using 3mm brass plate as I mentioned above. If you don't want to go to all this trouble and expense just use the original plastic and put a bit of weight where you can you will find lots of information on these locos on the internet if you troll around long enough this is old stuff been around for a long time now, years in fact.
The all weather windows are from Shapeways I bought some recently for my SW's. Roo.
