Ok when it comes to the old Samurai carb, and ignition system, I am a master! But I now bow down to the mighty Track/Kick gurus for help with this problem!
We are going to do a 1.6 swap into my Nephew's samurai. We bought a donor(1991 4 door Sidekick) from a friend...and he bought it from another friend

The first guy had it running, and said it sounded good. He had to swap the dist from his truck to get it going. The second guy has embarked on throwing parts at it, and never got it running. It has no spark. Power at the coil, and the module on top oif the coil bracket.
Guy one said the guy he got it from had changed the dist module, and it never ran again. With his it did though. I saw something on here while searching that said the modules don't interchange between years....how can you tell them apart? are there tests to see if the module is good? I read something about 4 pin, and 3 pin modules??? All of the info is kinda' vague though.
I work on motorcycles for a living...I mess with electronic ignition, and FI every day, but 2 dozen people have been jacking with this thing, so it's hard to tell where to start.
I want to hear it run in the Sidekick before I pull it to swap.