I agree with your “300 per year”Only if they increase production substantially is my opinion. They only produced 8,600 or so C7 Z06' s in the inaugural 2015 year and were building over 34,000 Corvettes. Canada got just over 300 of them. If production numbers stay the same as this year and the % of Z06's is similar, that equates to about 200 that will come to Canada. If that number is close, my guess is the top three dealers will get less than 10 each and the remaining 170 will be split among the remaining 600 franchises. JMO
GM's make more money selling the cars in US dollars every car that comes to Canada cost less than it does in the US.
So likely the more profitable Z06 will be prioritized in the US market. We will get a few to wet our appetite. Again start bribing your local dealer.