I landed a spare 06 ZX10 head and I’m planning to do some motor work this winter. Planning on having the head ported, cams done by WebCam, and 78mm pistons. I’m thinking of staying away from the crank because I hear that can lead to trouble if you want to continue to ride on the street. I’m trying to get as much horsepower out of this while keeping it ridable for the street. I don’t want to spray or use a turbo. Does anyone have any suggestions and how much horsepower should I expect to get with these types of modifications. Any help is much appreciated.