its crazy to buy disassembled heads from foreign businesses. unless the source is very reliable or you can inspect everything yourself you're asking for trouble.
ask yourself this questions, why was it taken apart?
it could be warped, valves could be damaged, etc...and the guy is clearly an idiot saying the camshafts are 170hp camshafts?
increased power is due mainly to higher compression and better gasoline in japan, not the difference in cams between b16a's.
buy a vtec head locally, or email me and i can find you a swap for a decent price.