Colorado,
Good luck with that...converting a model built for 2 rail to 3 rail is a lot different than converting a 3 rail model to 2 rail. When converting a 3 rail model to 2 rail, part get smaller, wheel width tread profile etc. The opposite is true when trying to convert a scale 2 rail model to 3 rail ,the same things have to get bigger... tire width, flanges etc. I would not attempt this for anyone. It would be a nightmare.
Joe, Baldwin Forge & Machine