Hello everyone in Vanagonland!

I found a Vanagon that is almost everything I'm looking for, except for
one thing, it's a '90 GL rather than a '91 Carat.

What is the difference between these two models? I know that there's
some sort of weekender package in the Carat. The GL has the rear seat
that turns into a bed, as the Carat does, but I don't know if they are
the same beds/seats, and it does not have the table. How can I convert
the GL to be exactly the same as a Carat?

Thanx again,
Terry