the least amount of work u have to do to ur engine is replace the rings...if u want to run more than 5 psi ..then replace the pistons and bearings as well...
Do a compression test first make sure the motor is healthy enough for boost.
If your going to run low amount of boost, you might be able to run some stock SR20DE injectors 259cc, i suggest running the 370cc's, and a 240sx maf. But youll need a ecu reflashed be either Calum or JWT
Nissan Forums is the go to place to talk about your favorite Nissan model, including the Rogue, Maxima, Altima and even sports cars like the 370Z and 200SX.