Question about CA smog regarding aftermarket headers

I recently bought a 2003 tacoma v6 4x4 and it needs to be smogged. It's exhaust pipes are rusted to hell but holding up. However, it appears the headers were replaced at some point, most likely because of the rust (probably leaked). Everything else is stock though. The headers look like some generic pipes, nothing fancy or high performance. I know CA laws are BS and I want to know if the replacement headers will affect the smog check. Can you knowledgeable guys offer your thoughts?

 

"Unless the aftermarket headers you purchase and install have an EO stamp, meaning they have been tested by the California Air Resource Board and been issued an Executive Order number, yes they will fail the smog inspection; as a tampered emission component. Exhaust headers, not to mention the entire AIR Air injection system is an "emissions component". Any modification to the headers, intake manifold, or exhaust manifold, including removal of a "Y" tube from the exhaust pipes (if equipped) is considered an emissions tamper. Your vehicle will fail the smog inspection even before the tailpipe exhaust is checked."
http://www.smogtips.com/aftermarket-performance-parts.cfm

 

Thank you for the reply. I guess I'll have to look for that EO stamp. Do these stamps just get placed under the hood somewhere?

 

Should be welded onto the headers themselves