Thanks, that clarifies everything. The torque on the thrust arm bolts (the two that attach the ball joint to the frame) are surprisingly hefty at 143 nm. These could be fun to remove... I definitely plan to spray some penetrating oil and let it soak overnight.

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2003 X5 4.4i
1992 Porsche 968
2007 328i
2014 Subaru Forester XT