Since this is an A-body and I know you are doing a package tray project....

I saw a 80K 71 Duster in a shop about 6 months ago. I noticed it had stitched edging to the package tray. Sure looked original, but didn't have a camera with me.

So yesterday at Fall Fling I see what looks to be an original package tray with the outline of stitched ends. Also had the indentations for popouts for the rear shoulder belt option. Seller can't remember if it was a Dart or Duster