Geiger Cars of Germany has a very impressive resume of modifying US vehicles including various Corvettes, Hummers, Cadillacs and Mustangs.* The latest US vehicle to get the Geiger Car treatment is a 2010 Shelby GT500 which they have managed to tune to the ability of 799 horsepower and 697 pound-feet of torque.* The 5.4-liter V-8 produces the near...
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