what do you guys think? im lifting my 05fx4 crew 4.5 in and gonnd run 33x12.5 on 18x9 rims. id like to retain some performance in the truck but i dont know if the stock 3.73 gears can give me that with the heavier rims and tires. would 4.10 be a good option? does anybody out there have experience with this kind of setup? hows gas mileage and performance?