Crossmember Back X-Pipe Exhaust System1974 Chevrolet C3 Corvette2.500 in. Diameter TubingDual Rear ExitTurbo Pro MufflersMellow & Deep SoundSold as a Kit Breakdown of Included ItemsPypes SCC10T Turbo Pro Crossmember Back X-Pipe Exhaust System Features:Mandrel-bent 16 gauge 409 stainless steel tubingImproved exhaust flow for more powerIncludes stainless steel clamps and hangers.