resister required for a replacement coil

[krwilson5]

I bought an Accel 8140 Super Stock coil to replace what looked like the original coil on my '57. Good coil, I'm sure, but the package says nothing about an external resistor. Back in the day, coils came with a notice indicating that it did or didn't require one. I even went to the Accel homepage and still nothing. The original 57 uses one of course. Can anyone shed some light on this? Thanks.