These have a 2-1/2" inlet with a 2" outlet. GM stock mufflers originally had a 2" outlet, and the exhaust extension is also 2".
Exhaust system components are made from 14 gauge (.070) aluminized pipe. CC '63 exhaust systems have a kick to clear the floor tool tray. We believe that all 63's except possibly very late cars (unverified) were delivered this way.
Original factory exhaust systems came on the car with the secondary pipe welded to the muffler. We offer both with the welded mufflers and with the muffler pipe separate. Note: This system is not to be confused with the O.E.M. high performance off road exhaust system which also came as a welded secondary pipe and muffler assembly.
Includes factory OEM high performance off road pipe and muffler assembly.
The Vehicle Fitment Guide is to be used as a general reference. The data has been provided by our suppliers and manufacturers and may contain errors or incorrect data. Always refer to a professional to verify correct fitment for your vehicle.