K-Line is the only one I know of that built one to-scale. I have the NYC car with the Corvettes (which I'm going to 2-rail at some point), and NYC was the only one who had them. I believe K-Line did a couple of "fantasy" units in other roads. The drawings are out there on the web, which is where I got the ones below in case you want to roll your own. Contact me off-list if you want the full set (it'll save you the search).
