Schoenfeld Collector Extension - 36" Length x 3-1/2" O.D. 337007 Mercury: Marquis 67 - 71

Mercury: Marquis 67 - 71 7 L Engine

65 in Thick

The dual pump models are designed for endurance racing where both pumps are used or one can be a reserve pump

we can confidently say our systems are the best

These quick change gears are specifically designed to run smoother and last longer than anyone else's and are the finest quick change gears available in the marketplace today

Schoenfeld Collector Extension - 36" Length x 3-1/2" O.D. 337007 Mercury: Marquis 67 - 71Schoenfeld Collector Extensions make easy work out of fabricating your race car exhaust system. 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 bends,