Hello......67 firebird 400. I believe it to be a non smog car per the delivery code on the car billing history sheet and carburetor code (7027272). Shipped to dealer 02-370 which according to my research is new york. Air cleaner (appears original) is non snorkel. So.. there is an open port on top of the power steering pump mounting plate that WOULD have been piped into the a.i.r. system on a smog car according to the field manual. Given this is a non smog car?....what should that port be connected to? You can see the open port between the two brackets.