Stop in for a cup of coffee

halifaxhops said
I THINK the coil application compensates for it?

I think that's right.
the number of turns relates to the voltage induced in the secondary.

toolmanmike said
Even with a ballast still too much primary voltage?

Yes. Better a little too much than not enough.

At higher rpms, its more voltage is needed to get the initial jump across the gap.
The ballast resistor in theory cools a little so voltage to the coil is higher the faster the car is going.