yeah i know this is a Honda site, but oh well. anyways, i picked up a "new" 2.3L DOHC head for my 2004 Mazda 3 over the weekend. heres pics: i picked it up that whole assembly for $250 at a junkyard where my dad lives. it looks pretty clean. now to put that sucker on,.... oh, anyone know what to use to remove the carbon buildup on the valves as well as some of the sticky looking residue from the gaskets that were atatched to it??