I can't answer about whether or not there should be a date code on the pump for your application, but can say that in concours judging date codes are not looked at other than the door plate and/or buck tag for a 65. I think that sheet metal and component date codes are looked at in unrestored and thoroghbred classes. Back to yours - a Ford pump with the correct part number is good. If someone else with specific knowledge provides information that leads you to believe you don't have the right pump, such as one with a date, hunt for one.