It depends on the final stage of porting that is done to it. But its the whole package that really gets you. Since you have to buy his intake and valve cover, build a custom header, and use special valvetrain components, you can be easily over $5000 before you can crank the engine with just the head and its required components. Since no professional racing sanctioning body allows it to be used in the USA, the only usable market for the head is someone outside the USA with deep pockets that wants an aluminum head for these engines that doesn't have rules restricting them from using it in their racing organization, and is allowed to use it or someone that has a vast amount of disposable income to build a real high end street rod or other type of hot rod.
