What are you doing for a lift pump? Those 12 valves are impressive engines. I have a 24 valve in my tow rig, I would prefer a 12 valve. Another thing for everyone to know is that the R2.8 must be connected to a WIF or else it will throw a code. Since they dont provide any real technical information its very tough to determine what parts from other vehicles could be interchanged. I really wish they would publish the pump/suction head of the lift pump so we could not fly in the dark when designing the fuel system, once again, its intellectual property. I'm going to try to follow Cummins installation documentation as close as I can, it will be interesting to see how it all plays out over the next several years of usage. When and if things break and need to be modified I will post an update.