You can't change the rear facing seat configuration to my knowledge and why
would you want to.  It is an excellent configuration that saves space and
creates a friendly environment in the rear of the van where people can face
each other and talk.  Even Chryzler has picked this up and is using it in
their new conversion vans.  If you don't like riding facing backwards then do
what I do:  Drive the van so you're always facing forward anyway.
Ken Wilford
Vanagon Carat Owner who has never sat facing backwards because he is to busy
keeping the van on the road.
John 3:16