ok, well im trying to do a z1 head swap in my DD 05 ep3. I got the idea from a friend and im hoping that its as good as it sounds. like we all kno the a3 head only has vtec on the intake cam, and by doing the head swap im hoping i get a lil more power from it. its obvious that by doin the swap ima need to tune it. now, my question is, is doin that head swap gonna give me better/more performance? i kno my compression is low but wud doin the head swap raise it some? and when getting it tuned will i be able to get hire revs and still make power from them? and juss putting it out there.. im goin with a z1 head b/c i am under the impression that its a better flowing head if you recommend any other head i will take into concideration... thanks for looking..