In there you will find Kanter. Call them and see what they have.
US Parts Supply has a pair listed for 420 USD on page 50 in their catalog.
Yes, US Says their NEW price (they haven't uploaded the new catalog yet) is 650.00
Ill try Kanter. (update) Nope nothing from Kanter
Try a local spring shop. I had a set made up and the ride height was adjusted to fit. Nothing special about these, just have them made up.