New S/E 46x38 fully p/p by K-Roc. Heads have the .250 longer stainless chevy valves and springs. They also come with matched scat tall manifolds for 48IDA's. The chambers measure out to 41cc. These are the same heads that Alan Uyeno is runing in his 1965 all steel street car that just went 11.95 on pump gas! I've only run them for twenty minutes to break in my cam. So there basically new! Save some money and buy them from me! I have $1700US into them and will let them go for $1200US! If you need pics of the heads please email me direct. LConcep@comcast.net