Ok, that will come in handy. I have already taken my HO scale former GI JOE play set loco apart, and am examining where to cut the cab so I can make it taller. I figured a crappy diesel is a good place to begin this adventure instead of a more expensive steam engine. Its one of those "who really knows what scale it is?" diesels with 4 wheels and a a vertical motor in the cab affairs. The under side says made in Yugoslavia and MDT as well as GE 35. Since this is a test I am laying down some ground rules: I can only use what modeling materials I have on hand, along with anything I can scrounge from taking apart random things. I figure I can put HO scale No5 kadees on it for knuckle couplers.