That depends on your application.
- Are you going for stock appearance?
- What is the RPM range that you're expecting to use?
- Are you using a high-energy coil driver or using large plug gaps?
- Do you want vacuum advance? Mechanical advance? Boost retard?
- Do you want adjustable mechanical advance stops?
- Are you putting this in a roller-cam block? Will you need a steel,
composite, bronze or cast-iron distributor gear?
The "best" from a performance perspective, is to ditch the distributor and
wires altogether, and use a crank trigger unit like the ford EDIS system, and
coil-near-plug drivers that you could adapt from modular motor (4.6L) or some
import applications. This may require more invention on your part than what
you're ready to put in.
Next would be a crank-trigger unit that has siamesed coils and triggers the
plugs in pairs. This requires special plugs on one bank, if you want to have
low-maintenance operation.
After that, go to a high quality distributor: Billet body, ball bearings,
adjustable advance curve, with vacuum for good highway mileage.
Next after that is to use a Ford distributor body and make sure it's rebuilt
to better-than-new specs. You can do this with a stock distributor, provided
you can find the rebuild parts for it.
In any event, ditch the points and use a quality electronic triggering method,
along with known-good coil, plugs and wires. This, and making sure the shaft
is straight (and that the rotor and cap fit properly) are the key basics to a
reliable ignition system.
Theo
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