yes, with a better head and you also have a 58mm stroke, that dyno showing only a 55mm stroke. your engine should be little better.
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for rpm's ? should still have about the same power range just with little bit higher numbers. get somewhat of a idle how much stronger. well gray's bike you rode for example. you should pull much harder with your motor setup and using a direct drive system(clutch) over using a tav like he had.