Well guess i'm going to sell my 68 barracuda 340 convertable basketcase !
Only pieces I dont have are the interior light fixtures at rear foot wells.
I'd like to upgrade the rear seats bottom spring assembly and the header panel of the convertible top frame. I have to imagine yours are rusted as bad as mine though. :(
If you have the window fuzzies from inside the doors those are special to convertibles (like a lot of other bits and pieces) and bring a good coin on ebay.
I have a 68 notch here that I could turn into a Form S convertible easier than restoring the 67 but, number switching is illegal .
Good luck !