I believe there is a difference with trunk lids. '67 has a frame with a outer skin(like a hood) where '69 has 2 solid skins with the frame as part of the inner skin. I'm not sure which way a '68 is. I have a '68 lid but can't get to it at this time.

I'm the CARETAKER of Weinstats '69 440 'cuda registry and have 104 of the 360 cars to date. 84 fastbacks/20 coupes. Always looking for new(REAL M-code) '69 440 'cudas to add to the registry so drop me a note if any are found or known. This isn't a publicly released registry. Thanks, Dave