318 block/340 heads?

Thanks will check after work. I have another question in the attached pic there is a arrow pointing to a pluged vac port it had a short piece of vac hose that went no where. I plugged it. what the point of open vac hose Carb air fuel mix. Just wanting some input before I get home. What i plan to do is vac gauge the intake and adjust mix. and attempt setting timing,

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