'Ya done good, Jerry!
Here a while back I purchased one of the Branchline boxcars off eBay. The box was sealed. (But I don't know if an end user sealed it or from the factory.) Surprisingly, it was missing the frame casting! SO... I went through my stash of stuff and found an Athearn casting that I was able to make work.
In spite of the missing frame, overall it is a nice looking model. May have to pick up some more of 'em.
Andre