The best thing to do is not just buy a kit, but rather get the parts from a few places. The web cam kits are at magicracing.com, along with the kibblewhite springs. The 10.75 or 12 to 1 JE can be ordered directly from JE. Alba also has the JE pistons, but they always want a arm or leg with the price!!! If you are a novice rider than go with the all around cam, but if you can stay in tighter powerbands easily go with the race profile, it's just funner. Don't go with the hotcam, they are about the closest thing to stock. The web cams or powroll or another equivelant are much more aggressive and offer much more power up top or in the mids.