Hopefully im putting this all in the right place. ...removing my smog pump and on the passengers side I'm good with removing the Air tube...but on the drivers side of the block, the middle two bolts are accessible because of this enclosed casing with a tube coming down from the air cleaner housing. There are 3 bolts underneath on the header where it seems to be holding it on. I feel if i remove them, Id have access to the two middle bolts so I can plug those. I snapped two photos, not exactly the best but they show what I mean...350 v8 Olds engine. Any help is appreciated..