Xoutpost.com - Front Drive shaft differences

Do you guys know what's the difference between them? Lengths seem to be the same though.
http://www.realoem.com/bmw/showparts.do?model=FB33&mospid=47746&btnr=26_0174& hg=26&fg=05

From the link below I get that both fit all X5s build from 1998-2003 on 4.4 but the notes attached confused me.
Assembly Details | BMW Parts Counter

So, can I use either 26207508629 or 26201229606. Mine is a 2000 4.4 manufactured on 10/1999 and I guess it might be some TC incompatibility though.
Thanks in advance.