Hey all, I currently have a 2010 F150 4.6L V8 3V 4x2 with 3.55's and I'm thinking about upgrading my differential to either a 4.10 or a 4.56 and I am going to buy a tuner for the speedometer and I'm currently running stock tires, may upgrade later down the road, no pun intended! And I'm wondering the key differences between the 2. What I'm looking for is accelerating, city driving, highway driving, towing, off-roading, mpg, and anything else I might need to know! Thanks!