[rotorwrench]

There is really no advantage on a 4-cylinder. The more cylinders there are in the engine design, the more it helps to keep the ignition system efficient and fully functional without point float. An eight cylinder engine can use a 4-lobe breaker cam with dual points instead of an 8 lobe cam with a single breaker point set.

There are two ways that dual points can be effective. One is if two coils are used in order to reduce the induction events by splitting them between two coils instead of one but it requires a special dual cap to take advantage of it. This allows for a lot higher rpm if needed.

The other use is similar to the same reason that the Ford front mounted distributor had two sets of breakers. One breaker set can remain open while the other will close behind it to allow for an increase of time that the points can remain open but still allow a coil to charge. This allows the coil to get better saturation at higher rpms.

Coil designs have come a long way since 1932 so most of this stuff was completely obsoleted by the use of electronic breakers and multiple coils, ie one for each cylinder.