Plastic door molding

As I've read, I've seen other with this issue and I'm reaching out to other Mopar guys for help. I understand nothing is free but I'm building on a tight budget. I'm trying to find the plastic trim that goes on the top of the front and rear door panels. 73 Dart Swinger. Mine are dry rotted and broke in a lot of pieces. They're extremely brittle. Can anyone help?