The last 427 Cobra (CSX 3360) was invoiced to Shelby-American on 12/14/66.
If this is technically a 1967 model - I'll take that!
Here a link to a picture, just scroll down:
http://elegantcars.com/events/2011-santa-barbara-ca/
If I have to pick a 67 Pontiac, it would be between a full-optioned GP convert or a XS code Ram Air (I), 4spd post-coupe GTO.