In a message dated 8/13/98 6:14:29 PM, ray.wei@us.pwcglobal.com writes:

>BTW, I can't find any notes mentioned the design changes on Bentley.  All
>diagrams on my Bentley show the same design like mine.  May be you have
>a
>newer edition?

My Bentley is copyrighted 1991. I don't see any later copyright notices on it.
In mine, page 87.13 in the AC section titled (From 1986) is this paragraph:

Evaporator housing - modified

Starting April 1988 a running change was made to the evaporator housing and
introduced into production. To prevent cracking, the body of the attachement
points have been relocated.

See your Volkswagen Parts Department for the latest information regarding this
upgrade. Also see the Technical Bulletin Group 87, Number 89-01, dated August
31, 1989.