Well - I did it. Actually the CPO Tech at BMW did it. Got my BMW SSK installed. At first I didn't like how it leans to the right when in neutral. I thought it only leans a little but this thing is about 1" to the right (Where 3rd gear would be but in the center).
So far so good - I love the short throws - will just have to get use to how neutral sits. One thing that I notice. Going from 6th to 4th is now even easier.
Will drive it for a few days and report back. (I had the whole kit installed including the Shifting Arm for the 335i)