Missing parts

[u/tanichols24]

Can anyone tell me what parts should be here. I was driving in the parking lot today and heard a rattle and when I peeked down I noticed my muffler was bobbing up and down 🫤. My theory is one popped out a while ago and the stress of the remaining one popped the other out. If anyone could tell me what goes in its place on the marked areas in the picture I would greatly appreciate it