I'll play again.
Year: 1998 4WD Auto-slush-slowness
Tire size: 265/70/R16's stock size
Gear ratio: 4:10
Mods: Here we go: Supercharger with underdrive pulley, 3" intake, 3" exhaust, oversized injectors, piggyback with custom tune, go-fast parts.
Highway mpg: Best was 21.0 MPG in Oregon. On CA gas my best tank was 20.1 MPG recently, this is not a gas guzzler even with doubling the crank HP to around 370HP. City mileage has dropped though to near 14.