I have never tested my coils, had a shop try it once and they thought the coils were bad. Still using that same set!
First thing to always do is make sure all connections are clean and tight. Also, your points should be in good shape with proper gaps or the magnetic triggers need to be set right. Make sure timing is right.
From there, check those plug wires. They break down. Also, the plug caps, they screw on. The wire they screw into will corrode. Take them off and snip about 1/2 inch off. Before putting the caps back on, stick test leads in each end. Set your meter to ohms. They should read about 5000 ohms. If they pass, screw them back on snug. Too tight and they can ream out the wire and you have to snip again.
Remember, 1&4, 2&3 fire on the same coils.
The ride IS the adventure. The destination is just to get gas!