Found them on examples from San Jose and Dearborn (Mustangs) also. As well as Cougars
68 San Jose example
Appear to be the mounting holes for the head light vacuum control module but can't be certain. In 67 they appear to have been mounted above that point
Have one example (67 Dearborn Cougar) with a dirt shadow that suggests something was mounted to the car there
But another Cougar (68 Dearborn this time) with the holes and noting attached. Humm
Would guess that Scott may have something to share when he sees this thread