I am offering this heater to list for a mere $100. It came off a 1980 I believe, and is in good shape, but not totally complete. Comes with the main heater unit (with glow plug and sensor/switch attached), fuel pump, ducting etc. I believe a blower motor is also attached to the end of the main unit, and you should be able to tell from the picture (see URL below). 
Resourceful types should be able to get this work without the missing stuff, or at very least it would make a nice back-up/spare for those folks that are lucky enough to have one on their van already. If interested, reply to me directly, as I lurk in digest mode. The heater is in NJ.
http://www.geocities.com/pernicev/heater1.jpg

Vince 85' Westy

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