According to Subaru, the replacement STI rear spoiler fits both the Impreza and the Crosstrek (same part number), so it would seem the mounting points are the same...
OK, I have one now waiting to be installed. I will post a picture once installed on my 18 Island Blue Hatch.
I was assuming it would be the same but thanks for confirming.
Did it work out? Mine just hit the garage door (thanks mom in law!) and needs to be replaced, would be nice to have a 3rd option. Not excited about getting a replacement and then having to have it painted, its might be hard to match the car..