I purchased the GM of Canada documentation package back in 1999. Nice package. Well worth the time and fee. Part of the package is a list of all the factory options on the car.
The car was produced at Norwood on November 11, 1966 (Remembrance Dad) and shipped on November 15, 1966 to Beny Chev Olds Ltd, Lethbridge AB. This correlates with the Fisher Body tag date of 11B.
All of the dated parts I've checked on the car predate production by various periods and seem correct. The only part that I could find that was replaced was the starter. It is a rebuilt high torque from a Pontiac.
The most rare option on this car is A85, Frt Seat Shldr Harness Deluxe. I've only seen one other 1967 convertible with this option and it did not have the belts anymore, just the side trim clip holders.
One thing that is neat about the GM of Canada documentation is that it states how many of the model of car queried were imported to Canada. In 1967 there were 1,325 model 12467 convertibles produced for sale in Canada. Not very many. Six cylinders were probably much less.