Spark Plug Gap 22R 1986 4x4 PU

I'm changing plugs on my vintage 4x4 and need a clue on the gap setting. The manual doesn't specify and I don't see the setting on the under-hood chart for the other various settings.

Anyone have a reference for this? :banghead:

.031
Autozone.com has a nice online manual, you would find the plug gap under the specification chart

Thanks for the reply "bjd".

I gambled and went with .031, but now I feel better about it.

Thanks again!