I've checked into two insurance companies that will insure my 80 Vanagon
Camper as a motorhome.  The first is National General Insurance Company
(1-800-847-2886) here in St. Louis.  The other is Camping World MVP
Insurance Plan (1-800-727-7300).  I haven't signed up with either yet
because I'm still looking.

Hope this helps.  Beni