I just bought a Lionel BN extended Vision caboose. I know that the Atlas and MTH are based on the International Car Company of Kenton, Ohio prototype. If you notice the windows(in the front and rear) in the cupola are smaller than the Atlas and it seems to sit lower. What I am curious is prototype and company did Lionel base this one from. This is a planned reconfiguration to a CB&Q EV built in the early 60s project. Thanks for your help.