For automotive subjects, the number of rivets is less than for an aircraft, so rivet decals are a viable option. Archer makes a lot of different sizes and styles, so it can be bewildering. But their on-line catalog has 1:1 PDF examples, so it is possible to figure out which set you need.
For aircraft, the rivet wheels are definitely the way to go. A dream product would be rivet wheels with sharp hollow points, to better simulate flush rivets.