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I'd go with the 03 or later Cummins, the computer to them is bolted right on the engine, and only needs a couple hot wires to get the whole thing to work, very simple. You can use a cheap holley blue elec. pump to feed the engines main injection pump.A 3" exhaust is fine too. I think 12-13mpg should be about right. I get this with my truck and fifthwheel in tow. |