I'm not insulting you it's just that a stock B20 head and an LS head are pretty much the same as far as I know so I can't understand where you got the idea for this set-up. and IMO the B20 block is way overated. What's wrong with just a plan ol' B18B1 with a supercharger? Are you sure you not talking about a B20 block with a VTEC B series head? I read as much as I can about engine building and I have never heard of the set-up you speak of.