The head and intake manifold are gasket matched, ported and polished. The guides under the valves are blended. I had help but did most of it myself. I used various fine grit wetsanding paper and the felt roll tips for a dremel with some valve lapping compound to polish all of it. I had other buffing tools for when I do my finger nails :P I was thinking about polishing the combustion chamber also but haven't got to it yet. It takes all day for it to shine.
