Dana Morphew wrote:
<snip>
> There is a rubber valve cover gasket, available for the 8 perimeter stud
> attachment as well as the 3 center stud attached valve covers found on
> the 1.9 diesels (get the right part number).  These also have the metal
> sleeves Frank spoke of.  This gasket might well be a cure for 'early'
> oil seepage on the manifold side between the valve cover and head on the
> inline-4 engines installed in the 50� position.  Be sure to get M6
> replacement studs that do not have the widened center 'step' if your
> engine uses the cork gasket with 8 mm. holes.
<snip>
> 
> -Dana-

The upper rubber valve cover gasket is conventionally known as the
Corrado Rubber Valve Cover Gasket. Just the ticket for early I4 engines
(8 valve). You can get one from many vendors, Potter has them, with
conversion studs;

<http://www.parts4vws.com>  
(Not Vanagon specific site, but a well thought of vendor nonetheless.)

hth,
TBerk