My friend Ralph (Herbie01) in Germany recently updated his homepage about his E32 740.
A lot of pics. Among others a fridge in the rear between the seats, special thick anti theft window glass, instead of the econometer he installed an oil temperature indicator for engine oil and many other things.
Have a special look under "Kettenriss" = broken chain, where you can see many pics of bended valves and the engine apart. Chain broke at 184 k km
http://people.freenet.de/Herbie01/