will have all you need. Click on the website, then click on FORD, then 2000, then Focus, then exhaust, then catalytic converter. After you have gone through that process if you are just looking to replace it with something similar I would recommend the EASTERN CATALYTIC Part # 30397 from their site. It is reasonably priced and comes with both gaskets that you will need. To get the flex pipe, go about the same process but you will need to select pipe on the last part. Then you can choose from that list. Another way you can do this is just go to your local autoparts store and tell them what you need. They more than likely carry this stuff on hand or can have it ordered in within a few days.