I have a '66 Comet or Fairlane 390 GT carb for sale. The numbers on the air horn are C6OF-9510-N LIST 3557 and is dated 502. This is a project carb as it will probably need to be gone through. The carb is complete other than the choke cap is broke. Everything moves freely. Price is $150 plus shipping. Email gandcmurphy@rogers.com if interested. Thanks.