Unless you have the jdm D15B vtec, your best bet
is to swap. I'm not saying go for a B, H/F, or K-series; just another D-series. Something like the D16Z6 ('92-'95 Si & EX engine), D16Y8 ('96-'00 EX), or one of the other jdm sohc D-series vtec engines.
After that; pistons, rods, sleeves, P&P head, aftermarket intake manifold, cam w/valvetrain, a good engine management system (no fmu and bigger injectors, or an apexi vafc), wideband O2 sensor, boost gauge, upgrade fuel delivery system (injectors, fuel pressure regulator, fuel pump, etc), turbo kit (either piece together one yourself if you're confident enough, or buy a good one; no e-bay shit), race gas, and finally take it to a reputable shop and have them tune it.
Here's a good site to check out:
Evans-Tuning
Find a dyno sheet for a D-series engine and copy their setup.
Also check out various web sites specific to turbo'd D-series.
http://www.turbod16.com
http://www.d-series.org
http://www.sohchonda.com