I have a rebuilt 780 vac secondary carb for sale. As stated it has the G.M number on the choke horn. In perfect condition. Only change to the carb is a conversion to a 50cc accelerator pump and choke removal. Rebuilt and has not had gas to it yet. The change back to a 30cc pump can be done if somebody is looking to for a perfect number correct 1964 396 restoration. Looking for offers. Mark