Well,
it's pretty clear that, although I don't believe it was intentional, this MT car definitely turned out to be a foobie...
however, amazingly this works in my favor...otherwise, if the car were an accurate SP prototype, I'd have no reason to purchase one.
But, it just so happens that Santa Fe built a few 'regular' 70' baggage cars with end doors...

I have a couple of extra M&R 70' baggage sides that will overlay the MT car perfectly (I'm using the Erie Baggage car in my builds), to represent this ATSF car

So, this 'foobie' actually ends up being a bonus car for me!
Bruce