No, the mounting plates are a different size(larger on the Coupe).
Yeah, I had looked in to Coupe mirrors awhile back myself, but unfortunately they don't work.
You can always try kijiji and see if you find a set.
There is a local scrap yard, besides Standard Auto Wreckers that always posts on kijiji, they may have a set.
Find a set soon! i wanna see this write up ! LOL. Really interested