Once again,
We get well thought out information, presented in an easy to understand format, backed up with solid data. Sure, Fast has strong opinions, especially in the area of cylinder heads, but he's never been afraid to back those up with a solid foundation of facts, experience, and reason...which is why he's easily one of the most respected and sought out contributors to this board.

As Sg303 put it, a customer needs to have good communication with his machinist/porter to get the correct amount of modification for his budget/performance goals...obviously the guys who do this kind of work, and regularly post here show a penchant for good communication skills!!!

One of the most common mistakes I see customers/racers make is to order heads/porting based on intended growth of thier engine program...then they are dissapointed when the product doesn't perform well on thier mild 440, even though they clearly placed an order for the all-out 528 they intend to build in a year or two.