Ceramic Coated With A Thermal Barrier 1-5/8″ Short Header For 2.0L Single Overhead Cam. Designed for: Neon. Primary tube size: 1-5/8″ O.D. Collector Size: 2.5″ Flanges: 3/8″ thick, laser-cut, contoured for a leak free fit. For more details visit the TTI Website.Price does not include shipping. FOB from Corona, CA 92880-1726 . Shipping can be very expensive depending on your location. For an accurate shipping rate please call us.