Here is a good pic of the rear mid wing.
http://www.seriouswheels.com/2008/a/2008-Audi-R10-TDI-Le-Mans-Winner-Dindo-Capello-3-1280x960.htm
Note the lack of louvers at the rear wheels.
Also you can see the leader lights on the side in front of the #2.
Here is the front veiw, look at the louver panels.
The fender coners.
Radiator ducts above the yellow rear brake scoops: are larger, as well as the brake scoops are slightly larger and a bit higher.
http://www.seriouswheels.com/2008/a/2008-Audi-R10-TDI-Le-Mans-Winner-Allan-McNish-1280x960.htm
I will try to find more pics of the inclosed front brakes. They have CF covers on them so they are not open and exposed like the kit.
http://www.seriouswheels.com/2008/a/2008-Audi-R10-TDI-Le-Mans-Winner-Marco-Werner-1280x960.htm
There is probably slight differences in the body nose, tail and wing as these are interchangable depending on down force. That is mostly going to be how aggressive the kick up in the back is behind the wheels, and what fence is on the rear wing.
Again, however, these are slight and would be only found if someone was really looking for them.