I only made the change two weeks ago and have not had the car out that much. Just enough to run the fuel low enough to change fuel pump and sender. I have a road trip to North Carolina scheduled in two weeks - then I'll know for sure.
That said - so far I like it. I have the boxy style Bilstiens, so it is stiff, but turns the corners like gang busters. I also have the F-car front and HA rear bars. I am cautious of the oversteer issues of this combination, but so far so good. I can not quite get the recommended 4 degrees of caster on the driver's side. Ran out of space, so in early May we are going to put in an offset control arm and new upper bushings while in there.
Wife.com's stock 9C1 seems a little woosy after a ride in mine. I think I like it that way, but have to hedge until I spend more time with it. I had a year of the ST and those ride and handle nice, but are too low for around town driving.
FWIW with ST:
Left Front 26 1/4
Right Front 26 3/16
Left Rear 25 7/8
Right Rear 25 7/8
See I knew I would find them.