Was looking through ebay and saw this 3. It says x-series, it is 21 hp over stock with SR Motorsports underdrive pully, cold air intake, and high flow exhaust as well as mazdaspeed grille,sideskirts, etc.. Didn't know if Mazda did this or a shop. Looking at the auction closer it was a shop that did it(Crest Mazda of Essex). Looks pretty good. Here is a link:
http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&rd=1,1&item=4626273165&sspagename=STRK%3AMEWA%3AIT
http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&rd=1,1&item=4626273165&sspagename=STRK%3AMEWA%3AIT