I was just wondering when putting itr cams in a b16/b20vtec should i have to worrie about the pistons hitting a valve because of the agressiveness of the cam or is that only when you play with the cam gears. Also should i upgrade the valves and valve springs on the b16 if i get the cams? I was also thinking about detroking the engine using a b17 crank and rods with either b20z pistons or some je pistons so that i could keep the engine at higher rpms do you think this would be a good idea.