Hahahah, I doubt there are any tuners knowledgeable with MS, save the ones from this board. However, Any decent tuner should have the know how to figure it out via google and their own experience.
The 300ZX does not do sequential injection at all. It is bank-to-bank until you pass 3000 RPM (and the car is warmed up, etc) where it switches to batch (all 6). Either pre-service campaign or post-service campaign wiring will do the same thing, it does not matter.
They are all wired 3 to 1 to save costs.
Try 60ish for the trigger angle.
Make sure the dizzy isn't 180 degrees off or a tooth off or anything. set the engine at TDC on the compression stroke for #1, and see if the dizzy points to the #1 cylinder. If it isn't, set it to.
I used the 24s9, which was the latest when I had my car, on my z31 with the z31 optical dizzy which is about the same, that was on the v2.2 board. The v3 still needs the pull ups, from the research I was doing.
The 84-89s had Bank-to-bank then batch, not sequential. The service campaign (not a recall) for the injectors is just less costly to wire them all up for batch, no other reason.