You need to specifically look up that coil.
Some of those big coils (like some of the Accel and the old Mallory) REQUIRE TWO ballasts---the one it came with plus the stocker. In the early 70's I was witness to a Mallory coil blowing up all over an engine bay --because no ballast
Example: The big traditional Accel "Super coil" 14001
https://documents.holley.com/accel_instructions_universal_super_coil_140001.pdf
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