Trunk drop off. Perhaps a more "common" 66-67 Chevelle one could be adapted, if there are no repros out there.
I was looking for one a few years back and no one made the correct one, Chevelle to short, Pontiac, about the same but different stampings, can be used. I found a used one but be carful, may look good on the outside and the inside will be rusty. A four door is the same.
Thanks for the responses guys, hoping to find an orig and clean it up good. Hoping to clean up an orig rather than using chinesium. Ya I tried a chevelle one up in there as well. Thanks for the tip on the pontiac, I will go that route if I cannot find someone cutting up a car. I received a donor car with this gs 4 speed, but the donor 66 is a pretty high option skylark, factory posi, ac,pb, tilt, buckets.. Its almost all there so hate to cut it up if someone would take it whole and restore it.
I had to find a 67 4dr in a junkyard for my drop off panels. I try Chevelle, GTO , 442 nothing even close. Good luck Ron
I have a 67 post GS and may be able to help. Can you take a picture of the piece you need. In CA if that matters, jim