Valve cover gasket replacement

jackcoostow

Test Drive
Location
Louisiana
Recently replaced driver's side gasket. No problems until I tried to reinstall plenum. I am attaching pics and have a few questions about them. Any insight would be appreciated.
Pic 1 Its kind of blurry, but the part I am curious about is the small brass colored tube at the bottom that points down. Any clue what it attached to?
Pic 2 Where do these tubes attach?

Thank you.
 

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