Why do you need to go to a referee? If you have to see a referee then don't do it but if you don't and just need to see a regular smog station then if it was me i'd do it. They do fly under the radar, they basically look the same. As long as it has all the sensors on it you should be fine and no check engine light. They just plug in the obd2 and do a idle/2500 test. Quick look and pass! Theres no timing to check and such.
FWIW my friend had a jdm gc8 engine on his gc impreza and he passed smog thru the regular smog station. He had it as stock as possible. This is in the stockton area