In a message dated 11/12/00 4:44:39 AM Eastern Standard Time,
JordanVw@AOL.COM writes:

<< The overhead unit is the same a/c unit as for a '85 down
 hardtop van, but slightly modified as the sunroof vans have a different arc
 to the headliner because of the double roof.  the unit also overlaps the
 front of the sunroof opening by a few inches, but doesnt affect in its
 operation. >>

i also wanted to add - i think VW actually planned for this, as if you look
in a sunroof vanagon, the sunroof crank handle is offset - not directly
centered in the headliner.  it is more towards the drivers side.   so when
the overhead a/c unit is installed, the center tunnel does not cover the
sunroof crank handle..
of course you bang your knuckles on the center tunnel, but the crank works :<)
chris