I have a 2.2 L on 31" mud terrains with stock 3.73 gears and it lags big time. I am gonna swap gears but i don't know that much about it. I noticed you are putting in 4.56 gears. I was contemplating those or 4.11 gears. What made you choose the 4.56 gears? Will you lose a lot of top end? How does it affect the gas mileage and driveability if driven mainly on streets? Any tips would be helpful, thanks.