heres my cheap and nasty recipie
E46 M3 Frontstrut mounts , Rotated to give camber
Powerflex Wishbonebushes (can also get E36 M3 3.0 bshes with added camber if you dont rotate topmounts)
E30 Solid fixed balljoint wishbones (same as M3 but without the camber correction)
adjustable droplinks from FK / eibach / UUC..
Xbrace fixed at all points
Powerflex swingarm bushes
Powerflex rear beam bushes
E46 Cabrio RSMs (BMW orig only)
Z3 reinforcement plates
Powerflex Diff bush
Antiroll bars are a question of preferance to which make is used, but are recommended in any case
Its not a top notch mega bucks selection, but ive read about these many a time from other posters, and they were m ore than happy with the results