How do I know if my car is EEC or Non EEC?

[Chevyguy]

I usually pick stuff up along the way and remember the little tricks I had to figure out the hard way. I worked on a 84 3.8 Ragtop and it could have had a Duraspark or EEC system depending on the build date, I nailed it the first try the parts guy was suprised I knew what I was looking for

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