TFS track heat top end kit and (if you can) get the trick flow 10:1 pistons to match and the TFS stage 2 cam. might be a little more than your budget but itll be worth it. the TFS stage 1 cam is good, but leaves a lot to be desired. the stage 2 is pretty damn good. if you can, go with a custom grind. the tf tw's dont like a whole lot of lidt (flow from .500-.650" is about the same), but having one ground with a good amount of duration will kick some serious a$$.
put it all in and hang on.

god i miss my car...