I'm not that well informed on the M102 ignition set-up. How is the spark controlled? Electronically through an ECM or mechanically using contacts/trigger inside the distributor assembly? What controls the timing curve? Mechanical advance or through an ECM?

I'd use the wires from the M102 and NGK BP6ES plugs.

Have you considered using an aftermarket ECM and a 36-1 trigger-wheel to operate the ignition?

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