In general the common thought is more displacement, more fuel usage. While this is generally true in a practical sense, it is HP that determines how much fuel is used. Bottom line there will not be a huge difference in fuel useage.

If fuel economy is that important then you do not want either of these options; get yourself a rice burner

As for tires I like the Goodrich Radial T/A's. Right at home on an El Camino. A lot of this though is simply personal taste, unless you spend a bunch of time above 100 mph ...................


Good Luck, Kitz