the banks truck does use a common rail engine, but also uses a mechanical fuel pump like the one on a 12v p7100

The No. 2 diesel fuel flows from the fuel cell through –10AN (5/8-inch i.d.) lines to an adjacent Holley® 110 GPM pump, which supplements the stock Cummins® diesel lift pump in the engine compartment. The fuel then flows through a stock Cummins fuel filter/water separator assembly and then to the mechanical high-pressure fuel pump.

 

http://www.dieselperformancemotorsports.com/