I don't know if this helps...
Porting
370 short rods
V-Force cages
Cool Head with 17cc domes
Timing +3
VP C12 108
Grass field... I was able to destroy my friend's '02 KX 250. Not even close. We're talking... 5 or 6 bike lengths in 200 feet.
Now his KX500. We were dead even until he hit 5th gear, I hit 6th gear. He slowly walked away. I'd guess he has a couple of mph on me.
BansheeGuy