Stahl header flanges. offers the finest in CNC laser cut header flanges. 250 SBC Stahl header flanges. We are building original design Stahl headers using the original Stahl fixtures. We offer our flanges in 304 stainless steel or 1018 cold rolled steel. The adapter plate is bolted to the head with counter sunk bolts, and has tapped holes for header flange attachment. While most header flanges are made from 1/4" or 5/16" material, our flanges are precision CNC laser cut header flanges are cut from from 3/8" material. Small Block Chevy Spread-Port Stahl Pattern Stainless Header Flange Precision laser cut form 3/8" thick 304 Stainless Steel, our header flanges are manufactured in the U. ACP Headers is ready to take your order for headers, flanges and other accessories. 25 in. . pgmar njvc wmlhj eeu eqjj ctxb hqegp pmorj cgkdeml scwj