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  1. R

    Air Locker For 3500 Dually

    I want to see if it's possible to add an air locker to a 3500 dually. I know you can do so in the front, but can you do so in the rear? I found one by ARB, the ARB RD 139, but it mentions that some duallys might have a 16 bolt ring gear and if that's the case it will not be compatible. Which...