VIN only tells engine type - diesel or gas, by the 5th character of the vin.
Engine size in cubic inches will be on the emissions label, the yellow one,
license plate door I think.  It would have to be a 2.1
VIN is on the dash, drivers side, a metal tag. 
On the driver's door frame,
And under the sliding door on the frame. 
Scott
www.turbovans.com 

-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of
Michael Sullivan
Sent: Wednesday, January 23, 2008 3:45 PM
To: vanagon@GERRY.VANAGON.COM
Subject: VIN Identification

Trying to find instruction to decode my VIN#. Any website or instructions
available.  Just need to confirm engine size on 91GL. Thanks, Michael

Thanks, Michael Sullivan