I have 2x 3rd Rail Santa Fe 2-8-0s. Smallest ATSF I have. These pop up on ebay from time to time. They are conventional so you have to either put a PS/2 kit or ERR in them if you want command control. The ps/2 kit is a very tight fit but as you can see it works! Also the smoke escaping from the headlight hole has been fixed :-)
Here's a quick video after a PS/2 kit install:
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