I have a new never installed front heater core asking ($100) get it in
before the cold weather starts
Bus Depot price  (sorry ron I gotta recoup some funds)
251 265 303C Heater Core, Front, 83-91 W/C Vanagon $199.95 $320.00

I also have a used AFM the air mass sensor on top of the air cleaner outta
an 85 1.9auto ran fine when pulled last month.
I am asking ($40) small enough to carry as a spare if yours is getting
flakey
  it is separated from the air cleaner body to aid in shipping.

these are prices in US$$ and shipping is free with in the continental 48
states
I'll quote prices for canada.PR, HI, AK