Propex heaters are the deal for Westys (VW Westphailia Campers)
ck out Karls site:
http://www.westyventures.com/propex.html
also to to
http://www.thesamba.com
(it is a VW site)
got to the search function
type in Propex
then select Vanagon forums
there is a SL of great info, pros & cons
pics of installs etc
a propex would be my vote also
bw
ps
tell Karl BW sent ya
ppss
there is a WEALTH of info on The Samba
that is directly related SMB's
also a ton of pics and mods