here are my plans for my car cause i'm in the same boat as you.
yeah i know that i can run my turbo right now but my goal is to make it safe for about $2000 (not including the turbo of course).

first get the sfmu from vortech($200 used), then get a digital af guage (60 new$), 30lbs injectors(around $100-200), egt (150 used with probe), missing link (new 60), hrc custom head gastet (70 new-i think), (350 new) pistons, (400 new) rods, then get a used hrc smic for about 300 (hopefully)...

from the guys on this board, stock internals are safe. but imo, dino and all these turbo gurus know their 420A shit but for me who's new to the turbo thing, i want reliability and spending the extra $2000 is worth it imo... plus the strong internals will help safeguard against boost surge. of course, tuning is still key here, but as long as your getting enough fuel and the gauges are say everything is cool, then your good to go.

^^^the above are pretty much things i've learned from this site and this superstreet turbo edition mag...

New Car:
2004 350z base, Nismo CAI, pioneer avic-n1 (dvd, cd, navi)



Old Car:
1998 GS with hrc stage 2, HID 6000k conversion kit, AEM UEGO wideband, sfmu, ml, prokits, Greddy warning gauges: egt, boost gauge, and oil pressure, apexi tt, haydans tranny cooler, costum dp, groundwires, dynotune fp gauge. gst muff, turbo spoiler
Boostin since Aug 03.

nothing like driving with the windows down and the music low: i love hearing the turbo spool, swwwhhhttt!!!!