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#4
06-30-2016, 09:34 PM
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Re: 1969 small block coolant drain plugs
 From left to right. 2 raised dots off center, 2 depressed Center, 2 small s head marking, 2 large s head marking and one later model 5/8's hex instead of the correct early 9/16 hex. Still looking for my set with L head marking. 
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