I think it was standard until '86.

At 12:40 PM 9/28/2004 -0700, Jeff at Vanagonparts wrote:
>I currently have 3 '85 Westies in the shop and all of them have the center
>seat rails.  Perhaps the center seat option was common on '85s.
>
>Cheers,
>
>Jeff
>www.vanagonparts.com
>
>
>-----Original Message-----
>From: Vanagon Mailing List [mailto:vanagon@GERRY.VANAGON.COM]On Behalf
>Of Kim Brennan
>Sent: Monday, September 27, 2004 10:13 PM
>To: vanagon@GERRY.VANAGON.COM
>Subject: Re: A little more to the story of how we got our Vanagon...
>
>
>Looks like a pretty decent van on the outside. You have something
>special in that it appears to have been outfitted for the center seat.
>If you lift the carpet you should see a couple of rails that a center
>seat slides onto. That usually wasn't an option available on US vans,
>so you might have a Canadian model (unless it was retrofitted by a
>previous owner.)
>
>You didn't have an pictures of the drivers side, so I can't tell for
>sure.