Almost too many to list!
You will need
4 hybrid driveshafts,
Hybrid propshaft & donuts
Haldex rear diff
Haldex controller
wiring harness for the above
Modified rear crossmember (to fit the Haldex rear diff)
New gearbox mount
New gearlever & linkage
& I think there will be more stuff needed as well, its not a job for the faint hearted.