i think you're talking about the roof rail weatherstrip seal. I replaced mine on my 69' and used the Soffseal 5024. Usually available on ebay, Summit, Jegs, etc. They start at the front there's 2 screws holds them in the front door jam and work your way back using weatherstrip adhesive you can get at your local parts store. They should come longer than you need and when I got to the back of the rear window I cut mine off just leaving about 3 extra inches and stuffed it in the rear quarter panel so it doesn't flop around.