Nice truck my buddy just picked

His buddy, a retired Pa state policeman has one that he tows his B1 race car and the fuel mileage he gets my buddy is satisfied with. Not great but not terrible either.
Comparing them to a 95 dodge with a cummins and they are terrible, comparing them to modern hemi and they are within a few miles per gallon I'm guessing. Thing is they seem to do about the same mpg empty or loaded in the 4x4 model and they are heavy rigs for sure!.