Iv'e been looking for the same thing for quite some time, I had to cut my springs and pigtail the ends to get the car stiffer/lower. Iv'e heard rumours that D&W in Germany might be able to get a hold of a set via Ron's Parts(see URL link). I don't know where your at but Ron's is one of the best places to get Europe only parts via D&W. Hope this helps....of course there are a few places that will custom bend a set of springs for you, but that gets expensive.
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