Hello
My father grafted the porsche wing on to a beetle about 20 years ago and has just finished a new one now witch is the gt2 style one, they are awsome with the widened guards.
Check these links:
Gt2 wing,
http://www.beetleracing.com/catalog/...products_id=71
Early 911 wing,
http://www.beetleracing.com/gallery/...es/000024.html
My fathers race car about 20 years ago with his fibre glass guards design by him,
http://www.beetleracing.com/gallery/...es/000018.html