You've been around for a while, so I suspect my answer is too simple. However, here goes...
In theory, you get them from PlasticBike in Italy:
I've sent them inquiries, however, and the cost of shipping their stuff to me in the USA is prohibitively expensive. If I lived in Germany, I think I'd jump on my bike and shoot over there.
By the way, I don't think I've seen those Shark pipes routed inside the shocks before. Looks cool.