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The drivetrain seemed a little undergunned to us with the 700R4 GM automatic, then adapted to the stock transfer case, and axles behind that, but this early Cummins isn't rated for more than 160 horses and 400 lb-ft of torque, so it should live for now. Plus the Cummins can be run on biodiesel or veggie oil, making it the blackest green machine on the trail.