The trucks are spec'ed on Spookshow's website as GSC 41-N. The coupler pocket looks proprietary- sort of a plastic clip on arrangement for the cover (a couple that I purchased had the couplers come loose during shipping, but everything popped back together with no harm done.
Coach is a NYC 64 seat, sleeper a PS 4140 (10-6) and from what I've read, the baggage car is based on the Chicago Great Western prototype.
As per CBQ fan, the couplers are Accumate.
Nice cars overall. Too bad the marketing wasn't better. I bought a bunch (once they were on sale), but apparently not very many other folks did. The sleepers were accurate for several major roads, and close for lots more- they had only scratched the surface on paint schemes. The coach was (I think) a NYC exclusive, but it has a good look about it- makes a good generic car/foobie/stand in.
Tom D