Heree are the exhaust ports on a stock head and the ported heads. Jim gave Bill the hetrashed head so ke could slice it apart and see how much he could grind out of it. We are working on building a good motor using the J heads we have. If some of you want to buy some of the C heads Drew has I bet you can do that too. Jim and I think we have to try to build an engine with what we have---then let people who want more have a way to get it. I hope we can up with the options people want. This is going to take some time. Let us see what we can get---then let us see where we can go.