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Message: <blockquote data-quote="duff daddy" data-source="post: 1205079" data-attributes="member: 10730">I would go with ported pi, just because of the availability of them, if something happens you can always get another cylinder head or a pair of heads on the skinny. Hell I know of a set right now ported, and havnt been on a car for 1500 and its a steal for the work that was put in to them. The bullitt manifold is good, it flows better then pi in certain ranges, and has some good qualities, however the price, the things you have to change and the number of them out there is what turns me off. If i was going to be building a Factory stock motor, then by all means I would have one. Im not and I can do what I want, so Eddy it is for me...  [MENTION=13900]metalman302[/MENTION] its not saying that people wont do it, or dont sell it. Its that if im buying a tfs head, its not going to  be ported by anyone. Fox lake does good work, they have been in the game a long time. However, the fact is the water jackets on the cylinder heads are close to runner ports and it doesnt leave much material there. I have seen more then a few have issues with leaks or seeping. I dont want that on my ass, and if your that concerned with the extra cfm, why not just buy the race heads?</blockquote>