Who supplies .. stock build street driven 440 ??
Assuming, based on your question, that the car is currently wired for points ignition. Similarly assuming that the Bang you are seeking is
low maintanence and
reliability.
For those goals on a
stock, street driven engine you want a system that provides the stock timing curves and coil that will be best from idle to 3000 rpm.
Options*
* Use stock single point distributor with Pertronix Ignitor inside. One wire will need to be added to the harness.
* Install a used or "rebuilt" distributor for a similar vehicle and engine from '73 up
+ plus the wiring harness for a mopar type ECU and the ECU from a parts store or junk yard. (similar to B5 Bee suggested)
or
+ plus the external HEI module etc as RapidRobert suggested.
The Mopar Performance chrome and orange ECU reliability has varied over the years. So that's a higher risk option. The Mopar Performance distributor with Mallory internals is reliable but inherently has a curve shape that starts to come in quicker with higher rpm, instead of slower. You can spend hours trying to get it to a reasonable compromise. A chrysler built distributor is a better starting place even if its not quite the original curve.
FBO limiting plate. Shouldn't need it since the engine hasn't been hot rodded.