J_Speegle Mine is a late '67 Metuchen built. Sorry I didn't denote that build. As far as the latch plates, mine are more of the 'flat' ones, not the one with the bump out or just a cut out in the my rear panel. No guaruntee the are original to the car though.
So what I am concluding is, I'll need to find the non-fold down filler panel where the trap door is on the fold downs, and hopefully it will have that trim piece still attached. Welded or bolted, I'll be lucky to just find it.
Given that non fold downs are about 50% of all '67, they seem harder to come by. It seems like they produce everything for the fold-down assembly, and not parts of the non fold down, so most resto's have converted them to the fold down feature.
Another photo' request if it is readly availible, does someone have a photo of the back side of the filler panel, from the trunk? I am curious what they look like on the back side and how they are different from the trap door.