simplest way is:
- decent turbo (garret gt35 or similar) on 20psi +
- big injectors
- nistune + z32 MAF if you're keeping things simple, or aftermarket ECU if you want more potential down the track... and tune to suit.
- head studs + MLS head gasket (or try your luck with the stock one if you're keen, and if it blows upgrade then)