Eurasia Automotive is another shop in Edmonton that "specializes" in Porsches
http://www.eurasia.ca
however I personally would got to the dealer, Porsche Centre Edmonton
https://edmonton.porschedealer.com
Other than the dealer, I have no personal experience with any of the other shops.
I recently looked at a '73 and a '74 2.0l, perhaps one if them is the one you're interested in.