Sixpack: I don't know if the 230 is already built or in process or what diff ratio/tires you have/plan on running. You didn't mention if your cam is also stock.
This site has very good info on cam selection and what engine mods/cam will give you mid range power. They all have to work together.
Just remember, you always give up something to get something.
http://www.amotion.com/
