Rear end gear ratio question

[S550ROB]

I’ve been researching for the past hour or so and have been getting mixed information about how to find what ratio rear end I have. I don’t have the original window sticker, I’ve looked at the diff and the door jamb but am still having some confusion. 2015 GT manual, non PP. Any help appreciated

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[LxMike]

3.31 gear. 3L31 and the GG code shows what gear the car came with stock....

 

[S550ROB]

Thanks, I saw the GG but couldn’t find any direct answer. Appreciate it

 

[K4fxd]

3L31 means 3.31 ratio locking rear.

 

[S550ROB]

3L31 means 3.31 ratio locking rear.

I see, learn something new everyday lol. Thanks

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