Not sure what gears you have in the differentials? Not sure what options were installed at the factory? Just go to the link below and enter the information. Dodge will email you your build sheet! For our Canadian members, you will need to use a city/state/zip code from the US for this to work. Go to the link below to see exactly how it was equipped. http://www.dodge.com/webselfservice/dodge/Recall.html Go to the "Your Vehicle" section on the left, then click on "Equipment Listing". You'll go to another page. Enter the VIN under "Equipment Listing" in the middle of the page and click on the "Search" button. You'll get an immediate equipment list for the vehicle.