I'm moving to a different set-up. These have been on my car about a year with about 25k miles on them, no track miles. I drive 90 miles a day to and from work. I have a couple of different spring options for the buyer. Here's a link to my review:
http://www.m3post.com/forums/showthread.php?t=662093
I'm working on a fair price. Just wanted to give locals a heads up. Should have it off the car in the next two weeks.