When I first got into S gauge, I really longed for one of the large steam engines to power my trains. In the 80's the cost of Hudsons and Northerns was way out of my price range however. So I bought two of the plastic bodied #300 locos and made an adapter so I could double head them. Looked great pulling a long train on the clubs display layout.
I still have those two and I still run them now and then. Really great runners, quiet and dependable.