hi i have an r33 series1 rb25 i have done some mods such as exhaust,frontmount,suspension,clutch,coils,sparkplugs gapt,boost controller,greddy e managment(blue one)not tunned yet!!iam wanting to get a turbo and manifold upgrade as was after some advise on what turbo and manifold will suit, iam after the 320hp to 400hp should i also get injectors???