Is my lower control arm toast? With Pictures!

I don't know Delrin, But in the current state of that bore, it will eat a Poly Bushing. My Polys are sorta fixed on the center pin and the outer diameter becomes the bearing; so that bore needs to be cleaned up.Lowspots are fine but the edges of the divots need to be removed, and the face cleaned up. If your bushing has a steel sleeve then just press it into the cleaned up bore.
I'm kindof with harissomn