Yes, on the block itself you can run a good amount of boost, however, it's the internals of that block that you have to worry about. Search the forced induction section, you'll find a list of whose motors went toast with FI and why... I can tell you RIGHT now that one of THE leading causes for blown H22's blowing up is because ppl do not beef up fuel delivery properly. Remember, just because you get injectors capable of running up to 10-12 PSI, don't forget that turbos are not perfect and you WILL get boost spikes. Get some kind of safeguard to prevent this or make sure you over size your injectors for what you plan on running.
FUEL, FUEL, FUEL!!!
Tis better to run rich than to not run at all
