you dont need to tear down your motor and build it all to make a d fast. ask yourself this.. how much power do you really need? where you do want the power? how much are wiling to spend? i was in your same shoes 2 years ago, i wanted a turbo gsr making like 400 hp, then i realized...i dont need that much power. all i really want is 200fwhp, so turboing the d is the best route. plus im not gonna be drag racing regularly, maybe once or twice just to see what it can do.