Hey there, my question pertains to identifying if my 2012 Rubicon has a 4:1 Rocktrac. My part number is correct for a RockTrac, 52123503AA and the build sheet for the vin says 4:1 rocktrac, but the ratio on the stamp is 2:72. I’m hoping that it’s that ratio on the tag is just incorrect. I noticed that my tag also has a number followed by 110512-JEEP2. I will be using this Jeep for rockcrawling. Did I buy a Rubicon that was altered? Please help!