I'll also chime in and says thanks to Tom for this solution. My 2000 X5 4.4 with only 89k miles shredded the driveshaft splines just like in the pics, and his solution worked for me and saved money vs. other options. The only issue I ran into was finding a local shop that was willing to go with this option. The first shop refused, but a second one was fine with it and indeed the owner later told me that it appeared to be an interesting and very fine solution to this problem.