I do have the DSSR. You'd have to ask Bruce @ BR if there were any problems installing... they did it while I waited and they didn't mention any issues. I don't feel anything negative with the DSSR: no problems in first or second. Second is quite a bit notchy, but I like that. Makes the motion very distinct.
I drove the car for a week before I got the new knob. I wouldn't do the SSK without the knob. I almost thought it was a step backwards after CDV, but with the knob it is now perfect.
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