the only set of headers CA will let you ever have is from "The Other Guys" header and you have to tell them your from ca to get your EO sticker.
http://www.arb.ca.gov/msprog/aftermk...es/amquery.php
here is a link that will help you out a ton on the hole EO number. From what I looked up last year you couldnt run an IC it was Illegal, also too CA thinks they own your Cat as well you cant touch that if you want to drive on the roads out here.
had to edit this because i didnt have the right link