PFI Nissan Maxima Turbo Kit

[super_man_3179]

I am getting ready to get a max next year...I want to get a 4th gen SE 5-spd..I was surfing the net for turbo kits(which there aren't many of) but anyway...I saw a company called PFI..http://www.pfispeed.com/interface.htm
and they have a turbo kit for the 4th gen max......at 4 psi boost it makes like 267 hp at the wheels....I called and the guy told me that they are now running it at 9psi boost and it dynoed at like 360 something hp at the wheels with about 380 ft-lbs of torque....He said that they sell alot of them and the kit is $4,500 and it's a bolt on kit. I was asking him if that was safe for the max and he told me that they were running 9 psi for awhile and haven't seen any probs...he told me that they were going to put it up to 12 psi to see how it would act....He told me that they do alot of installs and that that they haven't had any probs yet. MY question is if anyone has had any experience with this turbo kit??? or any other turbo kit? I was looking at the stillen supercharger and was going to run 9 psi with a 3.33" pulley but the turbo kit makes SO much more power with less boost.....I just don't want to ruin a vehicle that I have jus bought ya know? I heard that at around 12 psi you have to start changing engine internals....9psi should be totally safe then.....I'm not one of those people who YAM the hell out of the transmission.....I want to use this as an everyday car....but I want it to have MAD power whenever I want to use it. Basically just wanted to know if anyone had any experience with this turbo kit or any other turbo kit??