We recommend you contact the State Smog Check Parts Locator. The Part Locator Hotline might be able to help you find a California complaint (CARB Approved) catalytic converter for your Honda CRX.
If the emission component you are seeking is not available they may be able to issue you a "Limited Parts Exemption", through the state smog check referee's office. In most cases the needed parts are found. You may contact the State Smog Check Parts locator by calling 1-800-622-7733.