lol sorry no offense, I only called them stupid because they aren't exactly what I wanted... one of the big reasons for me for going with aftermarket heads is having closed chambers, also seems weird they have a completely separate model type just for factory high-compression 340 engines, I doubt there's much demand for those...? And on anything else they're pointless vs. closed chamber, just takes away the ability to build quench unless you get special pistons that come above deck. But I could be missing something here (that happens often lol)