There is a CD-ROM from BMW that lists the parts for all models of 7 from the E23 to the E65/66. These are sold on Ebay all the time just search under manuals and use the ETK for the search and you'll get lots of hits.
There is also a parts list sold that is in papaer form for various models that I purchased for @ 7.00 on ebay as well. This includes prices and labor time estimates to remove and replace the parts. I believe this is used by collision people.