Need some help...5.2L

Numerically higher gears will rev higher on the freeway but will get you off the line quicker. with 35 inch tires you would want to be somewhere in the 4.10-4.56 range depending on your intended use. 4.10's will set you up for a slightly lower rpm range on the freeway so a slight mpg advantage. but for a little better off the line performance and any towing the 4.56's would do a little better.