I have seen the Ad in a few magazines for the Hondata Gaskets and was curious so I may try one. I am needing help in the head department, I can't decide which would be the best to swap using my obd0 harness and the y8 block. z6, a6 or y8? I am guessing the a6 would not be best for turbo applications. I may take it to get a mild port & polish, maybe a valve job at a shop a few miles away. Springs, Retainers, Valves, etc... It will be easy to find a head of my choosing at a salvage near by considering everyone here shells out all their cash on farm trucks and tractors. Thanks in advance...