Kooks Custom Headers 6016-3 Catted X-Pipe Fits 99-04 MustangExhaust Crossover Pipe Catted X Pipe Catted X Pipe; 3 in. x 3 in. Inlet Outlet; Must Be Used w Kooks Headers; Stainless; SPECIFICATIONS: WARNING CA Proposition 65: Yes WARNING CA Proposition 65 Message: WARNING: This product can expose you to chemicals including Chromium and Nickel; which are known to the State of California to cause cancer; birth defects or reproductive harm. For more information go to www. p65warnings. ca. gov FEATURES: 100 Percent