Well I'm planning my catch can setup, I think I'm going to install it sometime this month. I was pondering some options and I went outside at work to see if my breather box is still installed. It isn't there from what I can see. All threaded plugs looked original but there was a big hole where the breather box goes. I stuck my finger down there scared that someone left it open and thus I've been driving around with an open block all these years but it feels like a deep plug.

And also, what is this canister below? Is it able to be deleted?

 

Charcoal canister