I have a mostly stock 2007 Cummins 5. 9L, my goal is to build the motor to put out somewhere between 500 and 600 RWHP. If you were to go about this what would you guys do to get there? Reliablility is a big factor as this is my daily driver so whatever I could do to make it more reliable I will go that route. I was thinking twin turbos, fass or air dog fuel system, injectors, head studs, valve springs and lifters, camshaft, intercooler, CP3 pump work, head work? Im not sure where that would get me but your suggestions and reccomendations would be greatly appriciated.