I have a carb. that has EBU stamped on one side and the Ford logo on the other. It has an auto choke and an iron base where the twin throats are. I don't know much about these carbs. Can anyone tell me if it can be used as a downdraft for a Model A/overhead valve conversion? If so, should I just remove the auto choke mechanism? It would be good to know what year this came from? Thank you.