LeCroix- I know where you can find a gently used 2010 135 6MT with dealer installed SSK. I know because I'm the one who traded it in.
I broke it in by the book. Never abused it. Changed the oil on my own dime (at BMW Austin) at 1200 and 5000 miles. Car runs perfectly. No mods except for the BMW installed SSK. And I'm a non-smoker. The car had 9400 miles on it when I traded it in. Also, I kept it in the garage.
Why did I trade it? We'll I bitched so much about the incredibly crappy "sound system" that they offered me a BMW trade assist. I ordered a 2011 135 DCT M Sport pretty much loaded except for the Nav. Yes I miss the 6MT-but I'm learning how to drive an auto. I think the DCT is going to be awesome but I havn't really pushed yet as I only have about 600 miles on it.
Here is the car I traded.
http://www.bmwofaustin.com/detail-20...d-5808207.html
So if you want to make the trip down I-35 from Oklahoma there is one at BMW Austin as of 8/02/10.