hollywood pretty much has it. i don't know that you need a forged crank tho it certainly wouldn't hurt. interestingly some na did come with a forged crank, can't remember the details tho, just had a discussion about this a few days ago too while installing my catch-can. too... much... information...
at any rate, you will have to change your compression ratio as well as your fuel delivery. in order to run it safely you should have the appropriate gauges to monitor egt (front/rear), a/f, fuel pressure and boost. an intercooler or coolers certainly wouldn't hurt either. now this is assuming that you have done the prep work to open up the flow (intake/exhaust) and can already change the a/f values via afc. for further maximization you should perhaps investigate cams and timing. alright, i'm getting carried away but this is basically my plan of attack after a great many conversations regarding your question... can you tell where i'm headed? alright, well hope this helps, safe travels.
- mike