Originally Posted by AcquaCow
I was looking at the 2008 STi TMIC... I don't see why that won't fit a previous year subie... other than the passenger side bracket will definitely be different (which is fixable).
The turbo seems to be in the same spot, as does the throttlebody. I think that as long as you had all of the plumbing to go with the IC, it could swap down to a previous year subie w/o issue...
I imagine it will be similar to using a 04-07 sti TMIC, there will be some fab work for the brackets, but other than that, you should be golden.
I think there will be a list of people who will want to get the take-off from the 08 sti, who have 08 wrx, for a cheap alternative to a bigger TMIC and easier access to bigger turbo options, and I would imagine for this reason that once people get modding on the 08s that the takeoff for an 08 sti will be a higher price than one for previous years, due to availability vs demand. but that is just speculation.