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I have the standard output Hurricane Bighorn Crewcab with the 3.92 rear axle, 2,000 miles so far. Gas mileage tends to be poor, 13-14 mpg combined driving. The truck does better with highway driving around 19-20mpg. My Hemi would do 17mpg city 21 highway. The 3.92 is hard on gas so for those...
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