I have been working on the flute sided cars. I have asked on this,and other forums,for any help in photos for detailing these cars. Although some very useful imput has been had I could not come up with exactly what I wanted. On a fluke I went to the following site and struck gold.
I know these are short but believed there must be a prototype somewhere.Hopefully this link will help those of you who also have these cars and would like to do something with them.There are both interior and exterior shots on three pages.Although I have the older run cars this site should also work with the newer ones
http://trainsale.com/buddcarsale/index.htm
Dave