I just looked at a 1997 Dodge Caravan which had a GTRV camper conversion.
It is identical to the Westfalia in layout and features, including the pop
top.
Sleeps 4, fridge, stove, sink, furnace.  Asking price is about $24,000 US.
These things are made in Vancouver BC, Canada, and you can get them in 4
wheel drive also.  They also make them on the Ford Areostar AWD platform.
I've seen a few of these around.

If I were in the market for a newer Westy, I would seriously consider one of
these vans.  Drives like a car and the  3.3liter V6 is more powerful than
the Eurovan.  Downside is that it is smaller than the Vanagon and EV.

Gary Lee
Calgary, Canada