I know that 74-77 are all the same but do they new one or remakes?

 

1976 camaro rad support

i think they only sell aftermarket ones, but i googled it and there is some used for sale (craigslist etc.) and a bunch of places sell them new (remakes).

 

I was on google and found only used ones on ebay but they dont ship to Canada

 

Is your support completely missing, or in need of repair? If you've got one it might be easier to repair it than to replace it. Even if you find a new one it might be ill fitting, as much of the repops are! Have you tried looking in your local Craigslist around your area for a donor car or parts?
http://geo.craigslist.org/iso/ca