yay the k20a3's i-vtec isnt a "true" vtec system in the traditional sense cuz the vtec only affects the intake side and nothing on the exhaust side...cams arent nearly as good as in the k20a2 or k20a.....plus as already stated the head just doenst flow as well...yay the k24 bottom end w/ k20a2 head is INCREDIBLE...its essentially a modern "ls vtec" if you will