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#1
04-19-2020, 09:52 PM
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One number could be the raw casting number and the other is the finished/machined part number.
K
__________________
'63 LeMans Convertible '63 Grand Prix '65 GTO - original, unrestored, Dad was original owner, 5000 mile Royal Pontiac factory racer '74 Chevelle - original owner, 9.56 @ 139 mph best 
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#2
04-19-2020, 10:41 PM
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Quote:
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