Originally Posted by Master Yodub
The only one I know of that is OBD2 CARB exempt for CA is the Carsound cat 43000 series. EPA/CARB OBD2 approved. I ordered mine from
www.kteller.com and it should be here in the next couple of days. $155 for the 2.25" cat with O2 bung and flanges, proper length for the 97 LS. I had the same problem, and it took me a while to find this.
And it's only a matter of time before I will too.

h:
If you don't mind, I'd like to integrate this into our FAQ thread.