I can give you two contacts who can supply OSRAV shocks one from France and one from Germany. Waiting time is 5-6 weeks. Both of them were cheaper than Zagato. Just send me a Pm if interested.
Otherwise, just to give you and idea, I am running Eibach pro kit (front springs are from 16VT, about 10mm higher and progressive) with new Monroe (front) and KYB gas-a-just (rear), along with new top mounts, bearings and spring seats the ride is really good, not bouncy at all like it was with the Bilsteins B6, controllable and enjoyable. That said, it is sporty and the car feels quite well planted on the road:) Not sure how this setup will behave on a track though but thus far I really like it and I can go over speed bumps without loosing any fillings from my teeth