I actually did the same setup on my 2008 Infiniti G37S today. Installed the KW V1's, Eibach front and rear sway bars, and SPC Camber plates. Along with that, I added in 19" Motegi Racing wheels and Stillen rotors (slotted, cross drilled) and a Stillen front grille. I probably should have done the hook slotted rotors but not too worried about it.
There is some rattling going on in the front right now but I'll wait to see if that takes care of itself...
Work was done by the fine folks at Portland Speed Industries. They know they're stuff...
Home - Portland Speed Industries
BTW, I also have a full stillen exhaust, intake, and pulley. 322 whp (dynoed at PSI and on their site)