These Competition Race Headers were designed in conjunction with Don Little Racing for the 426 cid Race Hemi.  These Competition Headers are currently used by some of the Fastest NHRA single 4 barrel Race Hemi Competitors. We use 3/8” CNC Header Flanges, Wide Radius Primary Tubes, and Spring Mounted Merge Collectors. These Competition Headers are available in Mild Steel or Stainless Steel and are designed to fit Race Cars with the Engine in the Stock location with an Automatic or Four Speed Transmission. Tube sizes are available from 1 7/8” up to 2 ¼” depending on the customers application. Please call for additional details.