KISS YOUR MILEAGE GOOD-BYE IF YOU EVEN DO A MILD LIFT/TIRE COMBO....GET THE DIESEL. NOW THAT I HAVE ONE, I DONT THINK ID EVER GET ANOTHER TOW VEHICLE WITHOUT ONE. I GET ABOUT 12-13 SITTING ON 38" TIRES WITH FACTORY GEARING. YOU WILL DO ALOT LESS WITH THAT V-10....ROB