I have a 2012 1500 4x4 with the stock axles and 3.55 gear ratios. I would really like the extra leg room of 4.10's for towing at the sacrifice of some gas mileage. If there is anyone out there in the southwest (I'm in Yuma, Az) that wants the benefits of higher gearing and would like to trade axles send me a message. I have access to 2 lifts side by side and can finish the job in a day. I know it's a stretch, but it never hurts to ask.