well the only real advantage to a coolhead is the interchangability of the domes,,,if you will be wanting to raise and lower your compression,,,your lookin at $300,,,,,shave your stock head and im borderline race gas at 160 psi for like $40,,depends on what your gonna do with it,,,oh ya,,,coolhead also gives the bling look,,,but stock shaved is the sleeper look,,,,lol