http://www.skylinesa...lazy-gt2860-9s/
http://www.skylinesa...rett-gt2860-9s/
You should get a few ideas from these threads.
I myself had -9's on a stock 26, 300 kw at 20 psi.
For up to 280-300WKW most were pushing stock everything, just exhaust highflow metal cat exhaust and tune.
If aiming for over 300WKW, nismo afms, 550cc injectors, maybe a fresh fuel pump, probably get a stock airbox and snorkel setup as it won't suck hot eng bay air.... Also some decent adjustable actuators for the turbo's. 22 or so psi on bp 98 and see how you go
Eng wise, stock cams, but adustable cam gears, stock dumps are fine up to 350RWKW, stock intercooler is fine also. Some sort of catch can setup would help too to stop blowby oil going into turbo intake and intercooler.