The Kooks 23-degree small block Chevy Stahl header flange with a 1-7/8in port is made from 3/8in thick 304 stainless steel and uses the Stahl 7-bolt pattern. Sold individually, it supports 23-degree header builds with a 1-7/8in primary port and is suitable for stainless header fabrication where the Stahl bolt pattern is required.
Kooks SB Chevy 1 7/8in SS 23deg SBC Stahl Flange (Bank)