Thanks tons for the info and the pictures. This car is soooo nice that I am going to also plug the bowl vent with a black, fuel capable plug and not that red vacuum plug. I am also very nervous about just letting it vent to atmosphere. I will just be sure to show the owner what I did and why.

I am replacing the center carb for one with the correct numbers. The one that was on the car was for a 4 speed car. Also, whoever installed these carbs was a hack. He had screwed up the flare nut on the rear line right at the carb inlet so bad that I had to make a replacement line. It looked like he installed it with a pipe wrench. :0