No need to flame the girl!
Hey Jenna, go back and check what I wrote in my thread on Ns.com about my silvia.
Doing an engine conversion myself I'm going to say you are going to throw so much money wiring that thing up, it might be easiest to sort out oa rb25, or rb26 head for it, turbo, manifold etc, ecu!
Even the JDM 31s that came with rb20s have trouble moving until they are higher up in the rev range, but your car is heavier.
Check the Forced Induction section for info on the hybrids! You might like to do something like that!
If you are a drifter, you probably want a little more torque than a rb20 is going to give you!
Good luck
Liz.