[Kurt S]

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The standard base battery for so many GM vehicles,Buick-Olds-Pontiacs-GMC,it's easier to list just Chevrolets.

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Rick,
Those applications use the R59, not the R59S.
The only R59S applications per the Delco book: 1968-69 Corvette and a couple of 1970 Pontiac 455's.

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Hi, Thanks for the info. I thought with the S behind the number was a heavy duty option battery. I guess I thought wrong. Thanks guys.

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Nope, you are correct. It has 13/cell instead of R59's 11/cell. Just not many applications.