It is an article of faith tha good driving is the most effective eco-mod.
Corvettes with 427 engines can get into the 30s. I'm thinking a GTO with a six-speed could give nearly the same results and you would not have to feel helpless on the highway.
Engine displacement is highly over-rated as a parameter to increase MPG.
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2000 Ford F-350 SC 4x2 6 Speed Manual
4" Slam
3.08:1 gears and Gear Vendor Overdrive
Rubber Conveyor Belt Air Dam
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