Barracuda to Dart Convertible Window Swap Question

I have a '67 Barracuda convertible and a '68 GTS convertible, plus my son has a '67 Dart convertible. I don't believe any of them have the hole you are referring to, but I could get a closer look at my GTS tomorrow.. I have had '69 Dart door glass (hardtop) and it had the hole. So, I think it's a year thing, not a Dart/Barracuda thing.