Question about headgasket
some people use the oem for .020 over so i dont think the extra .005 will hurt but if you going for performance just get a cometic they come in over bored sizes such as that. I have one for my .020 over z6.
your better off being a little over than under i run a 84.5 mm in my gsr and cometic dont have a gasket for it so i had to run the 85mm gasket
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