I'm running the following on 93 pump and I would'nt go any further w/out bumping up the octane......

K&N Pod filter w/ white bros. air box
39 PWK carb w/ velocity excellerator
Delta 2 reed cage w/ spacer
Std. bore wiseco piston
Bad Boy trail porting
.02 shaved from the stock head
HPD "new" race pipe and MT silencer

These are the things that I have motor wise and I could'nt see you wanting any more for trail riding. Sometimes Its got a little more than I actually want in certian prediciments.

EC