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Winter Project

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Oh Christmas Tree, Oh Christmas Tree.........!

This winter, I want to tear down my bike. I want to install the 03 YZ450 exhaust cam, a James Dean jet kit, and get the head ported and polished. Does anyone have any suggestions on where to send the head for the port/polish job? How much of a difference will it make? Will the difference be mainly on top end pull, or clear thru the rpm range? Thanks guys!

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