I was considering pestering him about that myself :hehe: First I am hoping to find a book that has a good collection of SP equipment drawings to aid in modeling ("Southern Pacific Passenger Cars, Vol. 1: Coaches and Chair Cars"), but I have yet to have good luck finding one at a reasonable price. I am combing through small sites right now looking for it. If anyone has a copy, I would appreciate a few scans if you have the time.
The Trucks are skins of two different creator's work as well. The bilevel has SimulatorTrain's metra truck, while the Subs have one called "American_Type_2Axle_Bogey for Pullman coach" by rwk. They don't quite work, though they are close to the actual trucks used, the cars ride a little to high for trucks and leave a bit of a gap between the body and the mounts for the trucks... Basically just an overly open space under the frame that does not look right. I am not sure what I will do about that just yet.
cheers