[Gas_in_my_veins]

Does anyone know anything about ARAO aluminum cylinder heads? I have seen flow tests and dyno results in magazines that make these seem like the end all to high flow heads. But then, I fail to see them in any street rods. If anyone has any knowledge (good or bad), please speak up. At about $5000 it's not something I want to invest in and then have warp in the heat of rush hour traffic.