Well, I've successfully had a Westfalia transported from Michigan to
Colorado.  I asked for referrals from the list, and this is the only one I
received:

Buddy at Anthony's Transport in Burlingame ,Ca. 1-800-606-2006,ask
for Buddy

Their quote was for $825 from SouthHaven, MI to Boulder, CO and for $775 for
a non-running Westy from Flagstaff, AZ to Boulder, CO.

I ended up using AAA-Auto Transport out of New York 888.821.0673.  My
contact there was Ross.  Their price was $750 from Michigan to Boulder and
$700 for the non-running one from Flagstaff.  I had them ship the Michigan
van to Colorado.  The van arrived on schedule and in fine shape.  The bill
of lading was actually from another company, Bob's Auto.  It turns out that
most of the shippers I contacted were actually brokers and didn't do the
shipping themselves.

So, for the Flagstaff to Boulder transport, I called Bob's Auto, Englewood,
CO - 800.287.2593 or 303.789.2593 (the guys who actually shipped the other
van from Michigan) directly, for a quote.  $400.  I was pretty surprised
that the brokers added so much to the price.  Needless to say, I scheduled
the transport with Bob's for $400.  They're set to do it next week.

Matt.