One-half point would be .5 increase, or 9.1 to 9.6.
Having said that, most of the guys I see in the CRXs in the south are running stock, or near stock, motors. Most times the guy who can drive with a stock motor will be faster than the guy who can't with a built motor. If the engine is not already apart, and you believe that it is in good enough shape for competition, then do the bolt-ons discussed earlier and leave the internals as is. Use the additional money to get yourself up to speed with more seat time. Then maybe worry about your horsepower levels later on. Small bore cars rely as much on handling and momentum as much as they do ultimate horsepower. That theory will vary from track to track, but the basis for it is sound.
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Chris Wire
Team Wire Racing
ITS Mazda RX7
[This message has been edited by Chris Wire (edited October 09, 2001).]