I think he's talking about putting a home brew system together, much like is done with Tecumseh HH engines when the expensive NLA electronic ignitions go down. The coil needed would depend on the type system installed.Please someone correct me if i am wrong. The coil will need to be changed to a P series coil.
I was going to remove a magnet from the ring of magnets that comes with the ignition module. There are 8 in the ring for an 8cyl car.I wouldn't remove a magnet from the flywheel, that is if you are speaking of the ones that power the stator, as you need all of them there for proper charge capacity. A tiny rare earth magnet would do fine & not affect the balance of the flywheel.
This ebay seller lists several sizes & shapes: http://www.ebay.com/itm/10PCS-8mm-x-1mm-Super-Strong-Round-Rare-Earth-Neodymium-Magnets-Magnet-Kid-Toy-/290896645453?pt=LH_DefaultDomain_0&hash=item43baca8d4d