I will keep it very simple for now. They make power in a VERY narrow band. They need to stay in that band to really get after it. The issue will be getting it there from the hit. Dont ask me how I know. They are not for the faint of heart of going to be easy on the wallet. They make power in an RPM range that comes with spending money plain and simple. Someday we will get ours figured out on the short times. IMO they really are bets suited for a big tire car with extrea gears, but sure is fun trying to figute it out. We have won one race this year and went out in the semis today.....Someday we will be good.....