Welcome to the Team Randy!
I'm not sure about Canadian trim tags as my book only cvers cars made in the US.
As to the engine stamp; in 1964 I don't believe even Canadian cars were stamped with a partial VIN as of that date. Canadians were the first to implement it, and it was put in place on all car parts very soon thereafter. (American cars were required under the same international treaty to limit auto theft to do the same thing; but some how Congress got involved and delayed things for a few years at GM's request, and they kind of overlooked entirely the part about record keeping in the US).
The other significant thing about a Canadian car is the government required GM of Canada to store all of the information on the build. You can get complete documentation listing all of the options and motor and tranny installed for a nominal fee to research and duplicate your records. Can't remember if it was $75 or $250 for the service (as far as that goes I can't remember what they charged but those two numbers popped into my head).