top end power?

i just got bored .060 and opened the exaust port by 1mm, i put a 34mm carb with a 290 jet right now and got the reeds to go with it. i put a fmf sst fatty with the powers core 2 exaust on it. and thats it for now. its got great take off power and wraps up really quick. but i would like just a little more on the straight shots. im still running with both front and back stock sprockets.
 
You asked about getting more power at the top end. The F7 pipe will give you the top end power. By changing to a bigger sprocket on the front and/or a smaller on the back will give you more speed, but less power and vice versa the sprocketsfor more power.

So the question is more power or more speed?
 
There I go again putting my mouth into gear before thinking of the consequences. It is not a good idea to mix and match chains and sprockets. Strict rule, new sprockets, new chain! Still a cheaper option than rubber.