Ignition for 360 magnum

The idea of a multi-Strike system appeals to me.
The Capacitive Discharge system is a proven warrior.

But like @rumblefish360 says,
the track-record of the MSD seems to be, less than stellar. And for the buy-in price, they should include a hotel stay and a paid return trip for both you and your car, from wherever their system breaks down.

I have used the Orange box, in the past, without issue. The nice thing about using the Mopar system is that in a pinch, any ECU from any Mope, will plug in and get you home. But the O-box durability seems also to be less than stellar.

I have not used the Hei system

A trouble-free coil that I highly recommend is the Big Yellow Square-top, Accell, with it's matching ballast resistor. Mine was new in 1999. Follow the included mounting instructions. That coil runs hot, is internally oil-cooled, and must be mounted with that in mind. It does not mount on the hot intake. This coil is not for use with a CDI system. A CDI system works best with a matching E-core coil. The E-core coil is not for use with a non CDI system. You can make it work, but the output with 12/13 volts is miserable.