agreed the fc20 has a higher piston speed than hondas f1 cars lol hows that for farkin piston speed the difference is in the valve train and the rods and piston weights we have some FAT (heavy) pistons s2k's have light pistons if you do aftermarket rods and valvetrain you can rev the crap out of the z aswell but with a cam that will breath at that speed you are going to lose some TQ at low RPM's