i think there was a discussion on this a while back, and the conclusion was that it would be easier just to put in a DOHC motor. But you would need to run the b6-ze ecu and harness to get the vics to work among other things(HUGE PAIN).
to do ITB's like this one made by Toda: <img src="http://todaracing.com/images/product_b16a_injection.jpg" alt=" - " /> you would need a stand alone.
B6T powered MX-3 - sold
Stage 3ish 03 WRX - sold
03 S2000 - current/ for sale