Here's what the date code looks like on my '64 GTO alternator. The year is first--4D28 is 1964, April 28.
The 1100668 is, I believe, correct for a '64 Tempest six cylinder car--and many other GM cars, including '64 Corvette, Impala, Chevelle, etc.
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BONESTOCK GOATS
'64 GTO Tripower Hardtop (Wife's Car)
'64 GTO Tripower Post Coupe (My Car)
'99 Bonneville SE Sedan
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