Tom, the biggest flaw in the Sunset Brill is the huge headlight prominently mounted up front. It's way too large and mounted too high. The drive in the unit, the self-contained truck drive performs very well.
For the money, I think the NJCB version is the better model. One does need to fashion an interior for it. I purchased one years ago that had the original open frame motored truck drive replaced with a Wagner drive. It runs well as a single unit, but struggles pulling a lone P70 or B60 up any grade. Not unlike the prototype. I will eventually put a stronger motor in it.
The prototype was the Brill Model 660, which also was available as an 880 with a larger power plant in the same car body. Rob's reference to the Keystone article is spot on. Everything you ever wanted to know about PRR rail motor cars.
