I noticed you need a couple of parts . 4 bbl throttle bracket, Heater hose support, The vacuum port you mentioned was probably for a factory in dash performance guage that was taken out of the car to sell separately, or from an A/C car with manual brakes. Maybe it was all they had to plug the hole. When you come over for the 340 block Crank and rods today. I will give you the bracket , support and the correct plug. remind me when you get here, Steve
