I recommend:

Estate sale 550i 6MT - I bought an enthusiast owned very well maintained e28 535is from the executor of the estate and told them I would do them a solid. Guy who passed loved his BMW's.

6spd Manual 550i - priced aggressively though negotiable - need to close the estate.

http://sfbay.craigslist.org/eby/cto/4952426016.html