Originally Posted by Zee Biker
... And are all STi years the same?
Not all STi intercoolers are the same. For USDM:
04-07: direct bolt on for 2.0l WRX using the outer bolt hole in the bracket on the passenger side.
08+: wider than 04-07, so it requires an additional bracket to bolt on a 2.0l WRX (or 04-07 STi). The bracket is available from Subaru.