OK, I posted this on the "other" forum and got zero response. So, if I wanted to "upgrade" my car, what's better than BMW original equipment, especially for the money? There are the ones I know about:

1. 750i upper control arm bushings
2. 750 front/540i rear brake calipers and rotors
3. E28 flywheel and clutch kit (supposedly E12 flywheel is even lighter - which may or may not be a good thing)
4. Z3 shifter
5. M-tech sport springs (lowers car about 1/4"; Dinan springs are basically the same and might actually be cheaper - imagine that?@!)
5. M-tech sway bars 25mm front; 18mm rear (there's also a Nurburgring bar that's 20mm)

Am I missing anything else? thanks!