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Old 04-19-2013, 11:35 PM   #6
Captainfab
60-66 Nut

 
Join Date: Mar 2007
Location: Coeur d'Alene, Idaho
Posts: 23,246
Re: 12 bolt rear end question

It could quite possibly be an early production 1980.

I don't have my RPO code list here, to look up what GT4 says, but I do know that the RPO code for a Gov-Lock is G80
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