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Long story short, there is no data that we can find about Vauxhalls that came to Canada - particularly GT's.
Recently discovered the archives of the Canadian Automotive Museum. It doesn't really help me but they were quick and kind and sent this - cars registered in Canada in 1969 (Last year this publication was in business (not sure what publication that actually is BTW))
note British Fords and British GM - a lot more than I would have expected. (looking at the chart again - a fair number of Japanese too)
Recently discovered the archives of the Canadian Automotive Museum. It doesn't really help me but they were quick and kind and sent this - cars registered in Canada in 1969 (Last year this publication was in business (not sure what publication that actually is BTW))
note British Fords and British GM - a lot more than I would have expected. (looking at the chart again - a fair number of Japanese too)