Very nice car! A little late for the era I model NJT, but then again my first ride at age 6 was when it was CNJ and PC. My NJT consists of Comet II cars, two self painted diesels, a GG-1 to be renumbered to 4877, and an ALP-44, If it ever get's enough orders, I'll have a 3rd Rail scale E60. Somewhere I have a Williams GP38 in NJT but it's not very prototypical.
I'm toying with repainting some K-Line Budd cars in to the late NJDOT and early NJT scheme as I rode on quite a few of those cars.
It would be really interesting to see more of your NJT.