I think there are a couple out there. I know the only Phase III SS427 '67 Chevelle was just found recently. (of course you already know that..

) I don't think any of the '67 Camaros have surfaced, that I know of anyway. The Ko-Motion '67 Vette still exists somewhere. Thats about all I know on the '67s.
BTW, Any updates on that Chevelle?