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				 Trying to ID this piston 
 
			
			Does anyone have any idea what this piston might be from?
 It's cast iron, 3 compression rings one oil control, flat top about 3 1/2" but that's just eyeballing it.
 
 It also is .010 oversize (stamped on top).
 
 I have a few of them, complete with gudgeons.
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