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4.0l head swap with TFI ignition - spark plug question

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4.0l head swap with TFI ignition - spark plug question
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Beaulac

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Regina
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'83 Jeep cj, 258, auto
I have a 1983 jeep cj and just completed the 4.0l head swap. I have the TFI ignition upgrade and am wondering what spark plugs/gaps should be used??
 
Champion RC9YC at .040 or .045 with the E coil if memory serves me.
 
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