Borla 60661 Resonator Fits 18-23 MustangExhaust Resonator Resonator Resonator; 3 in.; Oval; Fits w Active Valve Performance Exhaust; SPECIFICATIONS: Body Height: N A Body Length: N A Body Width: N A Inlet Inside Diameter: 3. 000 in Outlet Outside Diameter: 3. 000 in. Shape: Oval WARNING CA Proposition 65: Yes WARNING CA Proposition 65 Message: WARNING: This product in the physical form it is sold does not present a hazard. However; operations including; but not limited to welding; brazing;