Mass Produced John Wilkes Passenger Cars?

Someone with more knowledge of this, please let me know if this is correct, or what I might not have found.

From what I can find Mass Produced John Wilkes Paint Scheme Cars are:  Weaver Osgood Bradley or MTH Madison Cars.

The Weaver Cars have interiors.

The MTH cars (20-4010) have silhouette window strips.  Were the MTH John Wilkes cars ever offered with interiors?  If not, I know some MTH Madison Cars have interiors.  Does anyone know if the interior parts are still available to convert these cars?

Seems the cars used on the prototype were a mixture of Heavyweights and Osgood Bradley, is this correct?

Thanks for anyone that can help out!