no more header leaks

Not to burst your bubble, but I have used the Percy's also, they don't last forever, the dead-soft aluminum will slowly erode and blow out, mine took about 5 months, they worked fine until then. I tried copper gaskets later, they worked until I sold it (about 7 months). I was running a supercharger so it may have been because of possibly higher temps, just an FYI for you.