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I have a '66 289 that I'm thinking of upgrading to a duraspark ignition I looking for the part #'s for the distrbutor and controler that work together. I've seen a bunch at swap meets, but I don't want to buy something that doesn't work together.
Just google duraspark an you will get as much info as you will need. I have a system that I pulled from an older Mecury waiting to be installed. It's an easy swap.