Where can i find a state legal Catalytic Converter?

i have a 2000 camaro z28 and i need a new cat for the drivers side. and i cant find a cali. state legal 1
Where can i find a state legal Catalytic Converter?
edelbrock has them


also search jegs and summit racing equipment , both have aftermarket low restriction catalytic converters with CARB numbers

azalea tree