My opinion is leave it alone..at the compression your running there is no need for the filler,unless you plan on spraying it with a good dose of Nos or making it forced induction in the future.
if NOS is in your plans go with a good cometic head gasket and head studs...matter of fact i would do this regardless
like Beast said just My opinion
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Bjuice..
"I'M YOUR HUCKLEBERRY ! "