Other than simulating rivets with a pounce wheel, you could try these:
http://www.archertransfers.com/
They are tiny resin dots printed on clear decal film. I have not tried them, but have a project that requires extensive raised rivets so I'll be getting some. Download their catalog and print it out "actual size", as they have 1:1 patterns shown. Look at the N-Gauge (1/160) stuff, as they are probably your best bet to get something that matches.
Good luck!