They don't make a low impedance 2150. At least that I'm award of. But as Shane said you may need a bigger turbo to hit 600hp at DB even if you max the turbo out. Finding link right now of proven setup as yours is going to be very similar to Brads.
I think he did it with a required 255 and boost a pump but maybe I can text him so he can chime in.
Ninja edit:
http://www.mitsustyle.com/forums/showthread.php?t=20970