Slant 6 dies when driving

1973 and up electronic dizzy bad pick up coil. One of the first symptoms of a bad ignition pickup is an engine that stalls. An old or failing ignition pickup may cut out signal intermittently, which may cause the engine to stall. The engine may suddenly just shut off, almost as if the key had been turned off. Depending on the nature of the issue, sometimes the vehicle can be restarted and driven again after a brief period of time. However, this problem will persist and worsen until it is taken care of.

View attachment 1715266239

this describes to the T what my 73 Duster is doing. It is really keeping me from cruising the car. I have no idea whether my rebuilt 225 had the pick up coil replaced. Is there any value in buying an old electronic ignition tester or just go ahead and start replacing things?