I don't think you will find any good used ones. Scarce as hen's teeth.
I don't know if the one HBC carries is any better then the previous repops. All the ones I tried sucked.
https://www.heartbeatcitycamaro.com/...GM%23-3772324/
The originals have an extended piece on the clip so that when you push it in the hole, you squeeze the top tabs, which spreads the bottom tabs and keeps it in place (relative term... lots of them fell out).
I don't see the top tabs on the one heartbeat Jimmy has, so assume it is the same crap every one else carries.