Came across this on my Facebook feed today... looks like a kit bashed engine, but it is genuine. Even as an NYC fan, I just can't warm to this one. If it were a sailing ship, they'd call it a hermaphrodite rig!!!
Here's a link to some fascinating info on the engine I found on line:
http://www.railarchive.net/nyccollection/nyc7189.htm
After some reflection, it kinda looks like something from the mind of @m.mitchell.marmel