MSD coil installation
Depends on what ignition you are using.
If you are using the whatever MSD calls their directly connected distributor, yes.
But if you are using a cap discharge such as a MSD 6A box then no ballast
If you are using CD system, connect exactly as box instructions. The only wires to a coil with a CD are the two wires from the box. No radio cap, no ballast, and no tach