I haven't heard for the guy who made those in a long time and I don't know how to reach him. But what you should be looking for is a Viggen pin. I think they gave them out at the Viggen Flight School. If you can find a pin I will fab up the aluminum plate for you. And that goes for anyone who finds a pin. And if you can source a couple of the pins let me know.
I was just wondering how these tops were coming along. My stock piece actually popped off yesterday which made me think, "when am I gonna be able to get that piece from Nick T, I think it would be really cool to have one, it might even get me laid."