Northern Cali
This is kinda crazy, check it out. It's a database of all CARB legal parts and there CARB number to go with it.
http://www.arb.ca.gov/msprog/aftermkt/devices/amquery.php
To use:
Select what part you are looking for, for example I selected "Air Filter / Intake Mod."
Now CTRL+F and type in...