Since the Aristo ones have been inspected and discussed to death, the consensus was that they were very accurate 1:29. Since we know USAT will be very true to scale, They should be fine together, although often Aristo cars need lowering, and of course you will need to address couplers.
From the site, they will be providing:
USAT will make:
- combine (they call baggage/club)
- coach
- diner
- sleeper
- observation
Aristo made:
- combine
- coach
- diner
- pullman (close to sleeper)
- observation
- rpo
- baggage
So, I will keep and use my Aristo full baggage, and my RPO. I might mix in some other cars, but most likely not, even though it was prototype.
Probably also add an REA express box car up front too
Greg