going a little off the subject I had a guy offer me a ITR head for $580. Is this a good price? I haven't done any head work on my B16A head yet...I already have ITR valves, springs, Skunk2 ratainers, brass valve guides (new uninstalled). I have CTR pistons, CTR Cams, and an ITR intake, now will the ITR Head be my best bet, or should I invest the $$$ in port/polish, valve grinding the B16A head. After all this forum is all about engine build up. Thanks guys.