Click or scroll to zoom Tap or pinch to zoom SBC Adapter Plate 23 Deg by SCHOENFELD $50.99 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart Header Flange Adapter - 1/4 in Thick - 1-1/4 in Round Port - Aluminum - Small Block Chevy to Stahl Pattern - Each