Just about completely torn down now. I figured I'd tackle the big items all at once, and there is no shortage of those. Items I found after taking it appart:

CV boots are trashed

Transmission output shaft is leaking

Guibo has significant cracks

Center support bearing is completely shot

The only one that really surprised me is the center support. I would have assumed I would have felt shaking or knocking, but no sign. Here is what it looks like:

Here is a full list of the things that will be done in this stint:

Z3 steering rack

New tie rods/ends

New subframe bushings

New control arm bushings

New CV boots, and repack the CV's

New differential bushing

New guibo

New driveshaft support bearing

Complete shifter linkage rebuild including Z3 shift lever

New transmission output shaft seal and shifter seal

Flush differential, fill with Swepco 201

Flush transmission, fill w/redline MTL

Here is the current state of the garage, quite a mess, but all that's left to remove are the shift linkage support and seals.