[TeamRush]

I've seen several examples of the 'Juice Box' product, and I wouldn't use it.
I prefer to use better quality parts than they do.

As for 'Idiot Proof', if you can do a simple tune up, you can do this.
It's nothing more than Cap, Rotor, Plug Wires, and if you are ambitious, the coil.
I-6 engines gain very little by going to the E-core coil, and it's really not worth the effort unless you get the coil VERY CHEAPLY, like from a salvage yard.

Ford used a VERY HIGH QUALITY of E-core ignition coil from the mid 80's through the 90's.
If you find a Ford fuel Injected Vehicle in the salvage yard, find the distributor and follow the coil wire to the E-core ignition coil...
Take not only the Coil, but the wiring plug and the coil bracket.
Your average cost will be about $5 for all.

A good quality E-core coil will run at least $50,
The wiring connector will run $15,
The bracket will have to be made.

Stay away from the 'Import' coils that have the extruded Aluminum housings.
These are knockoffs of US made aftermakret coils and the insulation breaks down internally after a very short period of time.