I have a nice plastic bumper for Trans Am or Firebirds.
1979 through 1981 years.
Will sand up and paint nice. It is not crushed or cracked. The brown rust colour is just because it sat is some rusty water. That's all. There is no metal in these things too rust.
Just needs to be cleaned up and painted and it will look like new. No cracks at all.
Still comes with the "egg crate" backer shell and those are hard to find.
If you have any questions or want to know more, please feel free to email me or to give me a call.