Did a simple search on google, nothing too strenuous...
http://www.twistedperformance.com/components.html
http://www.geocities.com/prospeedrac...rokerKits.html
-don't know if i'd trust this one
There's not much out there for this.. I imagine not many people do this because they'd have to use race gas, or a mix. The 2.2 liter already has the recommendation to run premium.