rivnuts sometimes require holes to be drilled but you can not use them. Its just a pain. And alot of time you have to use them or otherwise nothing will really stay put or you can get a nut behind it.
If you dont have one and more then likely a mechanic wont have one unless he installs alot of them I would suggest going to a body shop. They may actually have them and wont charge you too much to install some.
If you dont have one and more then likely a mechanic wont have one unless he installs alot of them I would suggest going to a body shop. They may actually have them and wont charge you too much to install some.