tlowe,
Wow! Thank you for posting those. What an improvement. I could see a chamber design like the ones shared so far really helping even the mild street engine. The Sissell chamber has what looks like a "Fast Burn" design to it.
So I guess I can add my name to the list of people who wishes someone could come up with a more modern and cost effective cylinder head. The Sissell "Street Head" at $3500 is not a bad price. Just too rich for my pockets.
