In short it should fit if it's the same as 01-05... but a really big shoehorn is required.
It's alot larger and bracket wise u generally need to modify but it can be done. Alex from RMS and Joey are two i know who have them installed so. Second issue is with the splitter, with the larger intercooler u wont get the same seal (I think it has to sit higher) and ull only get air to a portion of the core with the stock splitter.

I'm looking at this option myself right now, but I'm sorta leaning to the new process west TMIC, simply because it comes with a new y-pipe, custom brackets, splitter and should be pretty comparable to the STI one.

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GC8 spec