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Old 09-16-2017, 09:58 AM   #7
Ol' Ron
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Join Date: May 2010
Location: Chester Vt
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Default Re: Mercury Standard Pistons 3.1875 Source

Are you sure the bores in your block areOK for stock size pistons and do not need an oversize piston. The price is usually the same. This might make a better job.
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