I was just at NAPA this morning looking for some J nuts, Clip nuts, WTF ever they are called. Anyway on the same rack they had all the plugs of any kind you could want, including the expanding rubber ones I have told people about before that we use to put in the roof rack holes from the factory when we shipped them to the dealers as we didn't put the roof racks on the station wagons at the factory.
Technology is great when it works,
and one big pain in the ass when it doesn't
Detroit iron rules all the rest are just toys.