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Old 01-29-2022, 06:33 AM   #3
Corts60
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Join Date: Jun 2008
Location: Holland, MI
Posts: 3,672
Re: 1979 3+3 GMC Dually

Beautiful! There should be a spid label in your glovebox or on the fender well under the hood that will label all options. If that is missing, then it will be hard to know all the original options. But You might be able to give the GM heritage center your VIN and maybe they can get you a build sheet.
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