My big question in another post was why are we only allowed to have 3 sleeves. Seeing as I have a powerhead with 3 sleeves, if I damaged a different one, it would not be legal. My question has been answered and some pretty good points addressed. I hope the 120 class lasts for several more years. I know I can't afford a new opti. It wouldn't be the 1st time the motors I was running became obsolete. At least now all my old inline 6 race stuff has great value again!