New CC3DP-158-SEC Sanderson Shorty Silver Ceramic Coated Header's for Small Block Chevy V8's. Made of 16 gauge, flange thickness 3/8" with 3 Bolt Flange Reducer's 2-1/2" to 2-1/4" exit, Primary Tube's 1-5/8" with D-Ports. $475.+shipping.