Base number reads 78 79635SA. The best I can determine after hours of online research is that its a 9635sa 625cfm Carter clone. Clone? It came in an orange Carter box with the now valuable (to me) Carter instructions and stickers that I THREW AWAY WHEN I WAS A DUMBASS 15yr OLD!!!! I'm assuming that an Edelbrock 1400 - 1405 is the closest I'll get to a modern version. Will an Edelbrock 1479 calibration kit fit my carb? It's running a bit rich and hates the low idle vacuum.