I'm the 3rd owner of this 635 and probably the last < grin >.
Upgrades Include:
Erebuni Body Kit
Custom Rims
Rear Spoiler
AC Schnitzer Suspension kit
AC Schnitzer Exaust
In the future:
Performance Chip
Euro-Bumpers
Clear Corners
Everything else original including the tape deck. Its a tan leather interior and a sun roof (pics to come).
Just bought this bad boy, if you have any good ideas for some nice and easy upgrades let me know. Its US spec butI shipped it to Germany, where I should be able to find parts fairly easy. Mhodges81@yahoo.com
Will update this later~



Some good 6 series links:
Clear corners for BMWs
Conforti Performance Chips
E24 Forums
Big Coupe Forums