Tractor Pull Headers 1-5/8" Primary, Forward Design with Top Exit SCH-1532Tractor Pull Headers 1 5 8" Primary, Forward Design with Top ExitSuit S B Chev SCH 1532 H 1532 Founded in 1974 by Don Schoenfeld, which it is still a family owned business, Schoenfeld Headers is the world's largest manufacturer of circle track headers, but we specialize in a variety of high quality exhaust parts, including turn downs, extensions, tubing bends and elbows, race mufflers, insert mufflers, mandrel bends, exhaust reducers, header gaskets,