Stainless Works Catback Dual Long Chambered Mufflers Factory Connect1963 Corvette Exhaust system. All tubes are CNC mandrel bent for optimal flow. Made from 304 stainless steel for maximum corrosion resistance. 2 1 2" system that fits with 2 1 2" manifolds. Designed to replace factory system and connect to factory correct manifolds for early cars with tool trays. These are TIG welded for strength and durability. These kits come with a lifetime warranty and proudly made in the USA.