• IMCA/UMP Small Block Chevy Modified header • Tube Diameter: 1-5/8" • Collectors: 3" x 8" • Flange: Standard Chevy • Mid-length primary style • Fits BMS, Hughes, Jet, Larry Shaw, Razor, and TRE chassis • Standard Chevy flange • Bolts & gaskets included
• Longer primaries for maximum torque & horsepower • Fits BSM, Dirtworks, Hoffman, Hot, Jet, KMOD, Bob Pierce, Pro, Quick, Sardeson, Smiley's, Victory • Standard Chevy • Bolts & gaskets included
• IMCA Modified Tri-Y Header • 4 Into 2 Into 1 Tube Configuration for Increased Torque • Fits Fits Bob Pierce, Hoffman, Impressive, Victory, J Car, Harris • Tri-Y headers come with 5/16" flange • Click on photo to see additional views • Standard Chevy • Bolts & gaskets included
• Longer primaries for maximum torque & horsepower • Fits BSM, Dirtworks, Harris, Hoffman, Hot, Hughes, Jet, Larry Shaw, Lightning, Lou Fegers, Bob Pierce, M&M, Pro, Sardeson • Standard Chevy • Bolts & gaskets included
• Longer primaries for maximum torque & horsepower • Fits BSM, D&M, Dirtworks, Harris, Hoffman, Jet, KMOD, Larry Shaw, Lighning, Lou Fegers, M&M, Pro, Quick, Skyrocket • Standard Chevy • Bolts & gaskets included
• IMCA Modified Header • Fits D & M, Dirtworks, Harris, Larry Shaw & others • Click on photo to see additional views of left & right side headers • Standard Chevy • Bolts & gaskets included