are there any must do mods to the 6.4 that you would advise? for reliability and/or efficiency..
dpf delete and tuner
the nice thing about the new 6.7's is they get good fuel mileage bone stock. and the trucks are even nicer than before. Not gonna lie, I have thought about getting one, but I just love my 6.4 and I would want to keep it too! LOL
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