short answer is 'yes.'
at the most, you might have to add a spacer ( about 1/4 inch thick ) where
the shift linkage bolts to the side of the trans,
or you may not.  But either way ........not a big deal.

and I assume you are talking manual trans, and not automatic trans.
Scott
www.turbovans.com

----- Original Message -----
From: "Stephen Cebula" <sfcebula@YAHOO.COM>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Wednesday, June 17, 2009 9:45 AM
Subject: 1.9 Tranny = 2.1?

> Can I use an `86 to `91 Transmission for my `85 1.9?
> I'm in need and there seems to be more later models available.
> Thanks,
> Steve