Edelbrock CH4B, Weiand Action+, Edelbrock Performer ... for RB Big Block - input sought

Isn’t that the hole on the back left in the picture?

On #8 runner? That's the vacuum port for the power brakes and other accessories. Dunno why they moved it from #7. Makes a longer hose routing, and over the EGR if you've got it.
 
I’m asking about the plate with all the holes on in the back center. Maybe you answered already but I’m not getting it.

Haven't seen it on another intake.
 
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