Here is a pic of the Carbon Fibre Rear Spoiler for VW GTI:
We also found this one from Opel Zafira, with an approx. landed cost of $225.00.
Same company makes this rear bar and they are presently looking at the possibility of making them for some Australian vehicles. Maybe they could be convinced to start with rear bars for.....I don't know.....say, Ford Falcon Wagon……
Just few examples of what is available out there and could be done.
Have fun,
mavs19
The RetrofitSource