All Classified forums require a Site Supporter subscription. It is only $25 per year and you can buy and sell whatever you like on the forum. To become a Site Supporter, go to Your Profile and select "Paid Subscriptions."
So the only two “G”’s in the Glove box is GT5 which I looked up and is 4:10 gear ratio and a G80 which appears to be limited slip. So obviously that doesn’t match either of the stamped differentials. I’m wondering if a previous owner swapped axles or I’m missing something?
Not true. 3.42 were available in 14b ff. Just really hard to find. I just swapped out one on mine.