Hi: Thanks for the replies....I have included a link to a web album so you can see parts of the catches. It is the anchors that I am having a hard time finding info on. It has been so long since I took these apart and a couple of moves too( so far these and inside door handles are the only thing coming up missing) I think the anchors for the catches have a bit of a triangular shape if thats any help. I have searched quite extensively on the net but no luck.
http://picasaweb.google.com/wilgoo50/1940ChevyWindshieldCatches#

ps don't mind the windshield plastered with bugs, it's a driver and we're having a blast!!!