Correct ballast resistor

Well back in the day, DC had the system worked out.
This is from the Speed Secrets (Carrol Shelby cover) version of the engine book.
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P4120534 was the Chrome Box version sold in the later 80s.
Notice it could be used with a 1/4 Ohm resistor and Accel's chrome coil, but only for short periods of time (drag racing).
Same box with a production coil in theory would survive general use with a 0.5 or 0.7 Ohm resistor.
With the Accel Super coil they show any resistor between .5 and .8 Ohms will work up for applications up to 6000 rpm.
I was using that combination for a while. Then on a moderately long trip the coil began to seep oil. That was enough for me. Was it the coil? Looking back, I'd say maybe, but maybe not. Didn't know enough then to do a more thorough investigation.