If you don't need a P30 for Cali Visual-Smog, I would honestly reccomend a P28 chipped with a stock P30 (JDM) chip. It will be more cost effective.

If you are not interested in that, that's fine, but that is what I reccomend.

Are you looking for USDM or JDM? USDM only came in the Del Sol Vtecs. OBD1 means you need an ecu from 94 or 95, I believe.
-PHiZ