I've already got everything. All parts a counted for. Just awaiting assembly. And heads are what is holding me up. 3 more weeks is what I'm told. And I'm sourcing a crank. looking into it. My father is a journeyman machinest and has built countless engines from daily drivers to drag cars and long distance boat motors. As well as circle track race cars. All of which see extremely high rpm without issue. He assures me that the crank will be fine. But I am still skeptical.