Fenton Wells asked:

"Does anyone know what IH (Internal height) these cars are supposed to represent?"

9 ft IH.  Model has 5/5/5 or 7/8 Murphy ends, indicating a rebuilt car that retained its original height; unfortunately, the details of these cars don't match any specific prototype.  It's a much more expensive analogue of the Athearn 50 ft plug door RBL.

Ben Hom