If it means anything, I purchased and drag raced a new '67 Fairlane 2dr sedan 427 in 1967. My car was a heater, clock and radio delete which would explain my recognition of your dash panel. There are only subtle differences between the '66 and '67 dash panels but yours is a desirable piece for the discerning buyer in need. Have you considered one of the pre-made, race specific switch panels available from Summit or Jegs; there are several variations, one of which, should cover your needs?