Only Holley Ultra HP and Ultra XP Carburetors . Will not fit any carb with a choke or Holley carbs with 7/8" x 20 thread fuel bowls. Holley Ultra HP: 0-80801HB, 0-80801BK, 0-80801RD, 0-80802HB, 0-80802BK, 0-80802RD, 0-80803HB, 0-80803BK, 0-80803RD, 0-80804HB, 0-80804BK, 0-80804RD, 0-80805HB, 0-80805BK, 0-80805RD.
