Use the deluxe smoothside 53' trailer. ![Smile :)](https://www.therailwire.net/forum/Smileys/classic/smiley.gif)
Same, Same...but different. There's a few differences between the deLuxe 53' duraplate Roadrailer and the standard duraplate trailer.
It's certainly the source for a kitbash, but not when you want a big fleet of Interstate, May and Schneider trailers.