If you are needing new catalytic converters to pass inspection or smog, Latemodel Restoration has got you covered! Whether you need factory or high flow performance cats, we carry them all. Adding a Flowmaster California legal catalytic converter to your Mustang can have you successfully passing your state inspection and keeping your exhaust tones down. If you would rather have a little more performance when adding new cats to your mid pipe, Flowmaster's high flow cats are the way to go!