Ok in the HF all motor beast article it says all you need to get more horse power is (dx head ,si distributer,si intake manifold,si ecu,and timing belt same year as the head) ok but after reading alot of these forums and threads alot of people say if you do that your gonna need an adjustable cam gear and they said that my pistons would knock ,so they said i would have to switch to si or dx pistons...IS THIS TRUE????and if this is true then you might as well just get a whole engine swap!!!!
