Hi All,
Here is an update on the air shock mystery, which I researched this
morning.
The air shock application, was in fact for the 86 to 90 Syncro.
But the mounts top and bottom are the same, and the collapsed length is
3/4" longer, and the extended length is 1" longer, than the 2WD vans.

I ordered them, and am going to get them next week end.
The beauty of the Gabriel air shock is, the air chamber is separate from
the hydraulic shock unit, so regardless how high you jack the vehicle up
the ride doesn't suffer.Also, the air chamber is not exposed to the
elements.
It is inside of the shock unit so the rubber air bag has a longer life.
Will report on the results, as soon as I get them installed.

Later,

Terry

85 GL