i'm not a head porter but i've had some brief conversations with Larry about his head tech and this guy rocks bottom line...
http://www.theoldone.com/articles/ check out the magazine article on "soft heads" that guy figured out that honda is the Shiz... long before the "older" musscle car croud did.. and he even had the first honda civic (or any honda) in Hot Rod magazine... pushing almost 500HP from a 1.5L civic motor (supercharged) running on pump gas!
so maybe some builder's/ head guys/ racers might have some DEEP understanding of this guys talk i know i sure got a good bit of info from reading his articles.