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1.Widen the chamber to 92mm front to rear if it's not already, use an old head gasket as a template.
2.Put an eyebrow in the block on the inlet side only.
3.Remove metal from the sharp corners each side of the plug.
4.Try and make it flat to concave around the side of the chamber leading up to spark plug from the inlet valve.
5.Lay back the quench area on the spark plug side.
OR Do I just need to find an "F" Head!!!???
Well if you can port the exhaust (which is harder than you think) the F head is capable of flowing a lot better on the exhaust side.
If I were you, I'd queue up for a VPD head. Which one you want would depend on what you want to do with it. If you want fuel economy & are staying with D-Jet injection, the economy F head which just has porting on the exhaust & dual springs is what you want, I think it's $650.
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