3 questions:

Will 2011 S4 driver's seat fit in my 2011 A4 without issue? Same wiring harness etc?

Similarly, will 2013 S5 driver's sport seat fit in my 2011 A4 without issue?

Is there any difference between driver's sport seat from 2011 S4 vs. 2013 S5? They look identical to me, same lumbar support etc.?