There are different injectors available that supply more fuel. I guess it depends on how far you want to go. RAUCH are you reading? This sounds like one for you. Concerning your head bolts...yes, new ones only. If you search around there is a gentleman by name of engnbldr that sells the proper application. After reading all his packed with knowledge posts and genuine human spirit, (that many have commented on), I would not look anywhere else. I would have used his products if the machinist I was working with did not have his own sources that he obviously has established his business with. Give him a call too and tell him what your doing, he is the guru, and has the service to match. Click here~engnbldr.com <img src="/forums/images/graemlins/patriot.gif" alt="" /> Have fun, when this is all over you will be able to rip your motor apart and put it back together within a days time! <img src="/forums/images/graemlins/cheers.gif" alt="" />