lets do it again! Random Tech makes the only cat for the focus right now. McNews Automotive sells them. I heard the nocked the price down to 300 bucks as opposed to 350. Well anyways...this is prolly the single piece out of the exhaust system that does the most good. The stock cat is so god awfully designed most people have gained around 8hp and 12 ft/lbs of torque. Once I put mine in the car reved soo much quicker and this was one of those bolt-ons that goes under the "definate improvement category" kinda like cams.