I have the OE 15" South African Vanagon rims still available.  These are ET 35 and I am selling them right now for $140 each.  Why buy something that may or may not work.  These are made by VW specifically for the Vanagon.  

Thanks,
Ken Wilford
John 3:16
www.vanagain.com
Phone: (856)-765-1583
Fax: (856)-327-2242