Schoenfeld IMCA Modified Mid-Length Primary Design Headers - 1-3/4" Tube, 3-1/2" Collector - Standard Port 820995 7/16 in Round Spline

7/16 in Round Spline

Aero Modified

1970-1977 Oldsmobile Cutlass Supreme

Ignition Setup

Schoenfeld IMCA Modified Mid-Length Primary Design Headers - 1-3/4" Tube, 3-1/2" Collector - Standard Port 820995 7/16 in Round SplineIMCA Modified Mid length Primary Design Headers offer a compromise between low end torque and high RPM horsepower. Fits Bob Pierce, BMS, Dirtworks, GRT, Harris, Hoffman, Jet, Larry Shaw chassis. 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