control unit blues

[Mark Trank <MTrank@exch.co.albemarle.va.us>]

As a follow up to my post yesterday (8/5), my 87 5K apparently has a bad
control unit, which is responsible for the rough idling problem
identified yesterday.  This part (I'm told) is manufactured only by VDO,
as the car is a turbo, and the equivalent Bosch part can't be
substituted.  As might be anticipated, dealer price is exorbitant
(approx. $375 US).  Any suggestions as to parts sources or other ideas
are much appreciated!

TIA,

Mark A. Trank
mtrank@albemarle.org
87 5KCSTQ/150k and still going.......