So I am tuning my jeep using super chips flashpack and wanted to estimate what my gear ratio would be running 33x12:50x18 tires, to do this I need to know my stock gear ratio. I crawled under my JKU and realized someon had the covers off at some point because the ID plate is missing from the two bolts. Is there another way to know what my gear ratio stock would have been on my 2013 Sahara?