Dart rear window shield?

Hi, I'm not even sure what the part is called so I apologize, but I have a 69 Dart Swinger and I'm missing the metal strip that goes on the back passenger window that holds the rubber seal. I have about a one inch gap in my windows on my passenger side allowing the rain to come flying in. Does anyone know of where I could find a replacement or someone who has one? Any help on this would be great.:(