Ok, with a current 85 views and not a single reply, I just feel bad for ya, so I'll say something. This question gets asked about once a month, the frequency of which will slowly increase as more are sold.
I (RalliSport Racing) was days away from buying a 2012 or 2013 Impreza 2.0i so I could sink my teeth into it for R&D. Then I found out that all 2013+ will be saddled with the PZEV version engine. That made my heart sink. I doubt many new 2.0i owners would be excited to take off their factory header (which has an integrated cat warrantied for 150k/15 years) and replace it with a $600 header that will surely trigger a cel.
So, I'll just revert back to my original plan to buy a 08-11 2.5i for new product development. Sorry