Weatherstrip

I recently got a 64 Dodge 880 convert. I have not had a Mopar in 40 years. My first car was a 37 PLymouth in High School.
I want to replace some weatherstipping, but can't seem to find very many Dealers that handle soft and hard parts. This is a C-body so Chrysler parts may fit? Im I right? I am relying the vast network of knowlage out there to help me.
Thanks Guys
Author: Dchappy