Bryan... have something for you to look at... will have it posted soon. I am sure something can be done to replicate the New Haven commuter coaches between the interiors of the coach and the parlor shell...
Jerry,
Looking forward to seeing what you've got. Regarding the New Haven ex-parlor/commuters - the MTL parlor is based on the New York Central prototype, which also is the New Haven prototype. Granted, eleven of the twelve NH cars had ice a/c, but one car did have mechanical a/c and is an exact match. When the railroad converted the surplus parlors to commuter cars, they revamped the interior but did not modify the window placements. So the MTL parlor with a coach interior also would be a match to the NH prototype from the mid 1950s forward, both in the green Dumaine-era scheme and in red/black New Image scheme.
That's three New Haven schemes you can do on the parlor model Joe (hint hint).