99-02 Dodge Dually MPG's
 

I'm really looking into '99-'02 Dodges and i'm having a hard time finding a SRW truck with comparible value to a dually. Most of the SRW I've been seeing have more miles with less options for the same or more money as a dually. I may get a dually for the better deal even though its over kill for what i need it for. Buying 6 tires over 4 would definately suck but for the amount of miles i would be putting on the truck it wouldn't be often. What kind of MPG's are you guys and gals getting with the dually?