I got an 89 civic hatch dx and i have this rear bumper where it dips down in the middle of the bumper and it is not aligned at all.
And one my buddies who had an ef said there a bracket to hold the rear bumper straight.
Is there such thing? tried searching.

 

Yes there is such a thing.

 

well i think mine is missing one. can i see pics of that part? and how to reinstall one

 

I doubt you're missing one. If you were, your bumper would be more than just sagging in the middle.

EDIT:

Here's a pic, it's the thin top piece.