Hi everybody... With stock wheels (114.5 18 7,5 et 40/50) there's no chance for front Brembo calipers (and maybe a lot of other brands)... I tried myself following the instructions of
https://blog.racetechnologies.com/2015/07/31/how-to-measure-your-wheel-for-proper-brake-clearance/
made all the templates, tried with normal Wrx (front), Wrx Sti MY2015 (front), Legacy 2.5i my2014 (front /back), Legacy 3.2 my2014 (front back).
I tried the Gold calipers and also the red drilled ones. The only one that would probably fit is the rear Gold Caliper for Legacy 2.5i my 2014. But here we have a problem which I couldn't solve yet: the problem is the one presented by Akko about CVT ebrake, that is the reason why there are rear Brembo available for WRX sti instead, which is only MT (and won't work on our CVT). For normal Wrx neither, anyway, also if it is cvt. Legacy 2.5 i is both Mt and CVT, but I don't know if Brembo are suitable for CVT.
The big problem, anyway, are the rim clearences: there's no space inside. I wear Rays f57xx and don't know, I've tried only the stock ones (below), which where not mounted on the car.
There's a chance, which opens a lot of different possibilities (not only with Brembo) , which is to use, for example, a spacer like that:
http://item.rakuten.co.jp/ksp-attain/ks-56201-vm4-vmg?s-id=sd_browsehist_search
With 20 mm more you can use a lot of different models of Brakes...
About spacers there are different opinions, make your own (but always remember: bad and soft materials may cause fatal injuries)
Ciaoooo