I didnt go back to read your posts, but if this is an "imported" car then you need to hear this:
the American model year is one later than japanese.
(If you have a 1992 japanese then it's a 1993 american)

I thought a 1993 was basically the same powertrain as the 1989-. I dont know. And being Japanese domestic might complicate matters,

those russian books (look in your PM box) will help to diagnose your no-spark issue.

1989 5 door montero 3.0 auto
stock original Japanese
about 200k miles