so yoru telling me that the cnc ported aluminum head at 64cc will flow better then the cast head at 72cc??

I planned to work the heads and port etc.. however I need the 72cc heads for the lower compression.. so my choice on that in dart is either the aluminum 72cc platinum series head or the cast head at 72cc

the 64cc/68cc (which ever it be) I cant use that will make my compression to high.. I cant match the pistons good enought o make the compression low enough with that head

Dave