Click or scroll to zoom Tap or pinch to zoom SBC IMCA Headers 1-3/4 - 1-7/8 by SCHOENFELD $229.99 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart Headers - IMCA Modified - 1-3/4 to 1-7/8 in Primary - 3-1/2 in Collector - Steel - Black Paint - Small Block Chevy - Kit