As Tom mentioned, you will need to also do the heat exchangers. This also
means you will need to use all the 77 original tin around the back side of
the engine since the plumbing into the heater boxes is different as well.
Also, the alternator/heater fan setup in the Vanagon is different, you will
need to keep all the 77 stuff for that. I also know that the Vanagon had a
little pipe (breather tube?) sticking up at the right rear corner of the
block and the pre 79 buses had something that bolted on here. Maybe someone
else will know if this will make any difference.
Myron Lind
Harrisonburg, Virginia
81 Westy