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Good that you have identified the "external ceramic ballast resistor"for your engine.I can`t suggest a coil make but it will need to be an "external ballast type"for points style ignition.The quickest test is to replace the distributor cap with a new one .More than one "offshore made dist cap" has failed with the first turn of the key !!
The plug wires should read no more than 500 ohms /foot,ie:2 foot wire =1000 ohms.My personal set-up is from Splitfire at 250 ohms /foot.
The 427 engine uses # WS 8100 a direct bolt on with no cutting .Many other makes are available ,but may require cutting and crimping connectors.Splitfire /1-800-477-5847 and press "0" to reach sales. Tim