Making 300kw at the wheels on a Gtr with the best response is easy
-9 turbos
Injectors
Fuel pump
Cam gears
Full exhaust
Ecu
A boost controller
Clutch (nismo twin plate is a great choice)
People will tell you that you need more but that's everything that is actually required, oh and n1 water pumps on street driven cars don't mix very well