Most of the people that have went with longer studs have found one the length
they wanted and then they took thier rear hubs to a machine shop and had them
change the hole to allow the longer stud to be pressed in.  As far as I know
there is no direct replacement longer stud for the Vanagon without some
machine work being done to the hub (maybe Porsche?).

Thanks,
Ken Wilford
Van-Again
John 3:16
http://www.vanagain.com
Office: (856)-765-1583
Fax: (856)-327-2242