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Discussion Starter · #1 ·
I googled and yahoo'd but didn't find conclusive information.

Are any of the Catera, CTS, CTS-V rears interchangable with the GTO rear?

IIRC, the Catera and CTS had 3.90 and the CTS-V has a 3.73 IIRC?

Are the Catera and CTS a Dana 40?

Is the GTO rear a Dana 60 or 80?

I assume the 3.73 gear sets sold by vendors will not fit the 2005 GTO rear since it is reported to have a beefier pinion gear?

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