Johnny Magic and Johnathan Goodwin H-2 Duramax Diesel conversion. Johnathan Goodwin and his company H-Line Conversions, Inc. pioneered “The Conversion“ of the H1 and H2 Hummers from gasoline, 325 hp, and 8-12 mpg to eco-friendly biodiesel 650 horsepower and around 25 miles per gallon. Hybrid, electric car, fuel savings, fuel economy. Visit:
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