ZO6 Corvette Headers with 1-3/4″, 1-7/8″ or 2″ dia. 31″ long primaries with “D” shaped port matched flange for Z06. 3″ Collectors, tig welded. Includes 3″ X-pipe, metallic substrate high flow converters, O2 extensions, Accuseal clamps, clamp/hanger assemblies, oil cooler lines, compression fittings, zip ties, cable clamps, etc. Will require dropping of front cradle and rerouting the oil coooler lines. Please choose the correct option for proper sizing etc.