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In a nut shell... Do what IRready said, andor see your shop. I punched mine up to 95" got some head work done and put in HD 203 cams... No dyno yet but it feels great and I haven't really cracked the throttle!!! I probably should of changed my compression and went with gear drive cams, but hey in another 10,000 miles or next winterI can go in again?
Call Steve (HDWRENCH) at GMR Performance. http://www.gmrperformance.com/
Check out the Power Pack 2 performance package. I just ordered one (waiting on my heads to come back). It is supposed to be a hot ticket.
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