convertible drain gutters

At the junkyard today was a 65 valiant v200 ragtop. I noticed these plastic pieces that I had never seen before. Ive had three 66 dart convertibles without these. They seem to be a rain gutter to redirect water. Installed near the rear window/top well. Are they supposed to be on my 66 dart? These arent in the best shape but would be a good starting point to repair or make new

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