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Old 05-30-2014, 03:55 PM   #2
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Join Date: Jan 2006
Location: Vermont
Posts: 2,832

Not much help, but I notice that it is a left hand thread, which is less common than right hand and sometimes (but not always) indicates a pusher application.

Even a "small discrepancy" in bolt circle diameter, center bore, or bolt hole size is probably enough to eliminate a specific engine. Hub thickness can vary a little bit due to normal expansion or shrinkage of wood with moisture, but the other measurements not so much.
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