Mark at Performance autosport has them. I have six new ones already installed on the car.
I am changing the springs to H&R progressive rate. The saleen springs Specific rates) on there make it ride to harsh for me. I am going to wait until I get the springs on and see how it rides before I plunk down another $600+ on the Bilsteins.
In my opinion the Bilsteins are the best shocks and struts out there. I've had them on just about every car and Truck I've owned in the last 20 years. I don't have them on the SSC "Yet". But coming soon.
RandyP