Actually, that is a picture of a euro WRX, which has standard 17" rims with 4-piston subaru calibers in front. They might fit over the brembos, but you'll have to buy them from overseas, or have someone import them.
I wouldn't put these on my STi though, even if they do fit. I believe they are only 17x7" whereas the STi's are x7.5"
Now they won't fit for sure since they are only 17x7", but then again if it has the right offset. I dunno?