I also have A/C in my '87 and would not want to be without it.

On a trip to the NW, joining a buch of others of "us" a few years
ago, we drove miles and miles of the backroads into and around
Mt. St. Helens. It was a very hot time, and many of the roads were
inside tall trees, dusty, no breeze at all, so sort of suffocating.

After the first day of this, I rolled up the windows and ran the A/C
and created my little heaven environment. The oppressive
nature of the high humidity AND heat was way too much for
this van cowboy, and the A/C made the driving part of the days
much more than tolerable. Sleeping at night, a different story.

I tend to drive around the intermountain region with the A/C
off and windows down, but am very grateful to have good,
working A/C to rely on. It has been converted to 134 and does
a very good job of cooling. I don't think the cabin has ever been
above the low 70's (I have a "weather station" in my van, so
the temp differential between external ambient and internal
is no guessing game.

Bob