On this part of my homepage I describe how I installed mine. On the "paint" part of it, it shows some pictures of the entire spoiler.
But, I installed it with brackets I made myself. So, it's no all standard. I also removed a little corner on the side of the bumper-mount recesses.
My spoiler is meant for the standard beetle, and I have a super beetle, that's why I had to remove the little corners.
Anyway, here's the page:
Kamei spoiler
I also have scans of the leaflet that originally came with the spoiler when new. Sadly, these are not very sharp scans which I found somewhere on the internet. The measurements aren't readable...
You can find them here:
Kamei Documents
If anybody finds better scans, please inform me!!