Proto it is.
I would love to do history and info on the prototype, but it may be too much for the scope of this article. MTL has nearly 20 styles of trucks alone. Add Athearn, Atlas, Kato, Bowser, IMRC, and a few others and I am left with dozens and dosens of pictures. I would love to add prototype photos, but do not have access to vintage photos with copywrite permission.
Back when N-Scale was part of Hundman Publishing, you could rely on their reference material for much of this, but that is gone. Don't get me wrong. I love the current state of N-Scale and the direction it has taken since Pam took over, but I miss the in-depth feel of the old mag too. This is why I attempt to get as many prototype photos in my kitbash articles.