What goes here?

[readymix]

Alright guys, need a little help here.
We got the engine rebuilt and ready to run but i think we are missing a peice. I think that it is just a plug but i can't remember.
There is a threaded hole right next to where the EGR bolts onto the intake. What goes there? I am not referring to the heater core hose. we have that.

I am at work not but when i get home i can post a pic if needed. Thanks in advance

 

[southernspeed]

Just inboard of the egr I've got a vaccuum take off port. Nothing else around there apart from coolant take of to the rear of it.

 

[stallion85]

Could it be the heated choke for the carb?

 

[readymix]

I figured out that it is just another vacuum port. Just installed a plug