I am not sure if Jim has released the official pricing yet, so I am not sure what they are going to be. I got the 2 vavle and Vinnie gets the 4 valve, and that should be a Monster. Be careful about buying just an Aluminum block as there are many changes you will have to make. Before you buy check with JimIII for all you got to do, and it might be easier to buy one that is setup for our engines.