Preproduction 1953-1955 C1 Exhaust System 6 Cylinder Corvettes. All systems include sleeves, donut gaskets and clamps. Mufflers are included with systems. No hangers. Exhaust system components are made from 14 gauge (.070) aluminized pipe (1 7/8" diameter tailpipes-16 gauge. Oval muffler type. Application all 6 cylinder. Includes replacement flange.