if that's the case the interested party could just send that member a DM asking if they're going to part the car and that they're interested in the fender.
easy play, doesn't junk up threads or create unnecessary radio noise.
I know , you can send a DM for just about anything. That doesn't help in being able to talk about stuff , just as you would out on the street, when the opportunity comes up. I wouldn't consider that junking up threads or creating noise.