If you're getting an engine light on, you should be able to get a code from the computer telling which system is malfunctioning. I personally am not familiar with the modular engine diagnostic codes. Post that question in the Modular Madness forum and I'll bet you'll get lots of answers.
Rev
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'66 Coupe, 306, 300 HP, C-4, 13.97 e.t., 100.3 mph
1/4 mi.
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