I've got a 95 silverado I'm running 35/12.5r15 tires with stock 3.42 ratio. I don't haul much but I do drive on the highway and plan on making a couple beach trips this coming summer. I'd like to get as close as possible back to stock mpg. I see alot of guys talk about 4.11 and 4.56 gears on here so what would be the best fit for my situation?