The secret or problem with them is that they require a special "breaker
points" plate. Joe Curto has developed the best plate for the dist., and
sells Petronix with plate. Skip Kelsey sells the units; I don't know if
he has a plate, but he might have a better price. The unit slides over
the dist. cam. The high lift cam is best for the unit. Symmetric can
might work with little alterations; asymmetric cam would need more work.
The benefit: a distributor that works better than new. Any bushing play
is negated. The irregular grind of the dist. cam is gone. The engine
runs smoother than ever. Negative ground vehicles easier hook up than
positive ground. Different kits.
John Seim
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