An adjustable retrospective inquiry.

[Gross Scruggs <GScruggs@wposmtp.nps.navy.mil>]

Audi to all,  several years ago I test drove a gorgeous green S4 at Chriswell in
Annapolis.  One of the features the car had, in addition to
power/handling/grace/competence, was that the outside mirrors would 'look down'
upon shifting into reverse.  I now find that with my '87 5kCSq the outside
mirrors are located sufficiently far forward that to see where you are backing
requires a neck stretch rivaling the yoga position known as 'the stork.'  

Has anyone retrofitted this feature onto their vehicle?  Is there a separate
control box or is this built into those mirrors?  Does this feature appear on
other series/models?  Anyone willing to part with said unit or steer me in
direction of one... preferably cheap?  

Regards, Gross Scruggs