Thanks for all your helpful posts!  Now as Paul Harvey would say its time for
"The rest of the story..."
I have decided to buy the 87 regardless of engine problems... (87 GL full
camper, five alloys, ac power steering, slight seem rust at a price that would
make it OK to replace the engine if necessary)
The deal is this, even though the owner says it overheats after 50 miles I am
really wondering if there is a head gasket problem.   Even though it had been
sitting for weeks (months?) before I saw it doesnt smoke or run rough on start
up as I would expect... Someone suggested a clogged radiator or an improperly
bled system...
Any Ideas?  The main rub with the purchase of this van is that it is over 400
miles away from me  (boston area).  I am trying to decide whether to rent a
truck etc and tow it home of get it fixed locally and drive it home....  Any
suggestions?
Thanks don