318 vs. 318 ~ Opinions?

Gotta chance on a full-size shortbed 80's Dodge p/u, carb'ed, 318 automatic, vs a 94 Dak., 318 ext. cab, automatic, both 2 wheel drive, both air equipped, Dak is loaded, "Ram" isn't.

Post your "real world" views on which is better for mileage. Your preference?
Author: Magnumguy