you can get your build sheet from dodge:

https://www.dodge.com/webselfservice/dodge/index.html

Click on the link down the left side of the page that says "Equipment List"

Enter your VIN in the smaller search bar and click search

But that should be an AAM 11.5

Codes:
[DME]=Axle Ratio - 3.73
[DMF]=Axle Ratio - 4.10[
[DRW]=Axle - Rear,10.50
[DRQ]=Axle - Rear,11.50
[DRX]=Axle - Rear,11.50, Dual Wheels
[DSA]=Axle - Anti-Spin Differential