scottigee said:The AEM CAI and cat back won't affect smog since the AEM is CARB certified and you can do anything you want after the catalytic converter without affecting emissions.
Where you may have trouble is with the JDM motor running an OBD I ecu and higher compression. JDM motors have so much trouble passing on cars newer than 96 is because they are OBD I and in the US all tegs after '96 ran OBD II. I"m not sure how 'plug n play' an OBD II computer is....maybe you could just plug one in if you could get your hands on it but you would need all the emissions control equipment off the engine that goes with the computer.....right down to the (expensive) cat.
This is why I just went with a USDM motor.