Newbie who needs help!
 

Hey guys, as the title says, I'm new to rx7s, and working on cars in general, but I'm very interested in it and the automotive world, so I picked up my first project today, a 1993 rx7. I could use your help identifying a few parts, some of them I've figured out, like the o2 sensor and a couple relay boxes, but there's a bracket I have no idea about. Ill attach pictures of everything and you guys can feel free to point out anything you recognize. Any help would be much appreciated.

There's also I black bracket with holes in it I don't have a picture of, bad description but maybe someone will know.

That's the underside bracket the FD has 3 of the in total, all a lil different from each other.