I have a '98 Indy Ultra, and in school we have this class that I take called applied tech math, it's where you study every aspect of an oval track car. Right now we're studying engines, and I started relating some of the processes for more power to my sled. The one that seems the most cost efficient is shaving the heads. There is a mathematical formula to figure out how much to take off. But since my teacher seems to be putsing around, and stalling when it comes to teaching us that fomula, I figured I'd ask here. About how much should I have taken off? and about how much would it cost? Thanks a lot guys. Oh yeah, I was reading the other post of the guy with the yamaha, when I get the formula I'll post it here, so everyone can benefit.