With some input from this forum I ordered my truck with 4.30 gears and I am really happy with them, the new transmission makes a big difference at 65 mph I am only at 1900 rpm. The truck runs great. Do yourself a favor and order the 4.30's I only have 500 miles on the truck and at 65 mph the display shows 15mpg and in town with all stop and go traffic it is showing 12.5 mpg.