67 Fastback rear deck filler panel repair ?s

Yeah, makes sense to replace gasket.

My guess is the seam is near the hole.

Anyone have a pic of where the seams are at?
Take the window out. You'll be shocked. I removed the lead and used short strand fiberglass after the metal repairs were finished. Mine looked better than your looks before I started.

rear window lip 01.JPG

rear window lip 12.JPG