Get a Jim Conforti Chip, Sachs makes a great suspension kit for e34s, get european spec projectors first so you can upgrade to Xenon later, also you can get "Shadownline trim" that was on the e34 M5 to replace all of the weathered chrome trim.
I had an e34 and am very farmiliar with the quirks and mods. Shoot me a PM if you have any questions.
Here is a pic of my old e34
