I am in the process of mounting my old spoiler on the new deck lid and I found that the old studs had rusted to the point of not being able to be removed from the spoiler. When I finally got them apart the studs had unscrewed from the spoiler and were unusable, I tried finding replacement studs on the internet with no luck. I ended up making some out of stainless steel all thread and stainless washers. I cleaned up the existing holes and ground numerous notches in the end of the stud before screwing it back into position. I used a two part industrial epoxy.
http://www.devcon.com/products/produ...%C2%AE%20Epoxy Hope to get the spoiler mounted this week and see how well it works.