Schoenfeld IMCA Headers - 1-5/8" Diameter - Standard SB Chevy 42031BL open-end lug nuts are designed

open-end lug nuts are designed to fit most racing wheel applications and will not pull through the wheel

these custom a-pillar mounts simply slide over the top of the stock a-pillar

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465 in Bore

Schoenfeld IMCA Headers - 1-5/8" Diameter - Standard SB Chevy 42031BL open-end lug nuts are designedIMCA Modified Headers fit D&M, Dirt Works, Swartz , etc. Straight out design, one piece welded construction. Started in 1974, Schoenfeld is known for custom fabricated headers for all forms of circle track racing. Schoenfeld Headers is the worlds largest manufacturer of circle track headers, but they specialize in a variety of high quality exhaust parts, including turn downs, extensions, tubing bends and elbows, race mufflers, insert mufflers, mandrel