Seen this on the internet... I am not sure if I like it or not... what other options are out there.
I had that on my sti back in the states. I had over 400hp though and did auto x and track events.I'll be honest with you, the top one is great. But if I went that far it would have to be slightly higher than the roof so it actually worked, and bolted to the chassis for the same reason. If you can't stand on it then it doesn't work as a real down force rear wing. They do make some with brackets that slide back after removing a couple of bolts though or maybe some special quick release, that allows you access into the boot.
Check out the Aero V4 Chassis Mount for the wrx/sti hatch.