I just ordered these two items 2 weeks ago from getbmwparts.com.
The rear cover lift kit is listed under the x5 accessories list for $55.00
Genuine BMW E70 X5 Rear Cargo Floor Shock Kit
I originally ordered my x5d with the spare tire because i was planning to get non rft snow tires to swap during the winter because the 20" wheels would not do well in any snow condition when trying to stop going down the steep hill near my house. I was able to find a set of barely used 18" RFT snows on OEM bmw wheels so I took out the spare tire and jack and replaced it with the luggage compartment pan. There are two part numbers for this part depending if you have the tie down tracks(storage compartment package) or not.
Luggage compartment pan 51477146043
For vehicles with Storage compartment package
Luggage compartment pan 51476974232
You'll also need the plastic plugs that attach the pan to the car:
Fixing plug (6 I think) 51471911992
2012 BMW X5 35D
2007 Porsche 911 C2S Aerokit
2006 Toyota Prius Package 6
2003 Ducati Monster 1000Sie
Last edited by raddray; 11-12-2012 at 10:28 PM.