Guys, to find Mopar specific classifieds, you need to join a group that deals specifically with them. If you're just hunting thru the general FB marketplace, you'll get no where fast.
That's the key with selling anything on market place, join a group that reflects what you're selling.
I sell more than car parts, so I've joined a couple of local groups that are basically an online yard sale for this immediate area. With a few exceptions, I've sold every item within a couple of hours of posting.
FB market place is far from perfect, but with a little thought (and patience) it can be made to work.
Getting back to problems with market place.........
I almost got shut down for trying to sell 'pornographic material' (their words). Say what? I had some old health/workout magazines (Men's Health for example) that I was trying to sell before trashing them. Health and working out is pornography?
They didn't ban me, but they wouldn't change their stand on the magazines.