Duster, Demon, rear spoiler

i had one of those spoilers on a dart sport back in high school. They were a direct connection piece. When I had my car repainted I had one installed and the shop used small pop rivets, after paint it actually looked good. I believe it was made out of abs plasitic, not fiberglass. I just saw one of those on the ebag about a month ago, but not sure if it was a direct connection piece or not..