Magnum EFi idea? Suggestions please

DionR said

I don't remember anything, but I don't pretend to be an expert, and I have been proven wrong more than once. Curious to hear what you find.

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My memory has been jolted :D It isn't the runner that was changed, it's the divider. '97 and below have a lower divider. unsure of '98, but '99 and above have a raised divider.