Here are several pictures. The trucks look the ones for the SD40-2, which none of the C&O units ever had, but while running you would have to get real close and look hard to see the difference. There is also a quick video of the horn. My memory doesn’t serve me well enough to know which horn it closest resembles, I know one has a much deeper sound vs the other sound tint-like high. The unit has both ditch lights and marker lights so you can pick one you want. All originally had only marker lights.
It was close enough for me so I got both units. The last time MTH did a Chessie SD40-2 was in year 2000, I didn’t want to gamble that it would be another 20 years before the next one.