***  please examine the photos very carefully;  check and verify your vehicle application against the listed part number for the correct fit of this part before you bid !!!  ***  FOR YOUR CONSIDERATION IS A PAIR OF 1955  1956 FORD  FAIRLANE  THUNDERBIRD  MERCURY MONTEREY NEW OLD STOCK FOMOCO FACTORY HEAT RISER CHOKE SPRINGS, PART NUMBER B4A-9467-A. FITS ONLY DUAL EXHAUST APPLICATIONS .