MSD 8214 Ballast Coil Resistor

I have a 65 Cadillac Eldorado 429 cu. in. it currently has an external round resistor that sits on the coil will this work in place of the round one?

Will it work on a 1959ford F100

I have mad coil on my 1984 Mazda Rx7 gsl-se can I put resistors on it

Will this work for a 1973 datsun 620?