[Bentblazer]

I had the same proglem on my drivers side but the fiberglass was also broke. Still was a -itch to fix, but was able to repair from the inside. I kept a header piece from my double wall to use as a header snaps for a bikini top. Looking at it I believe it would be easier to fix from the top by cutting a hole to repair through. I know thats not what you wanted to hear but it does look easier that way (due to weather strip channel and surrounding area)