I have for sale a Holley carburetor # C80F-9510-AB. I've done a little research on this carb and it appears it was to a 68.5 428CJ Mustang/Cougar or a 68 428CJ Shelby GT500. It's in good shape for its age. Was on a running car. Only real damage is on the mounting flange to manifold. Bolt holes are a little damaged but will be covered up when installed. I'm selling this carburetor as is and it probably could use a rebuild. Jet size is unknown. Please do your own research on the carb number as this information was found on the Internet and could be incorrect. Thanks again and happy bidding! This is a very rare carburetor! No Reserve! I reserve the right to end auction early.