Inside a FBO control box

You are lucky to have a clean enclosure to work with. I expect the potting popped out in one piece because it wasn't the correct material. Maybe they used cheap silicone caulk. I also work with electronics and agree that those solder joints are very poor. It is getting hard to hire dependable peasants in China today. At least they did use a quality film capacitor (yellow), though only 1 vs the standard 2. It would be interesting to see the other side, where I expect the power transistor is pressed against the case for heat sink.

I would pull the board and wire-in a 4-pin HEI module (~$10 ebay). Others have done so, and I think you can find instructions here. That would give you a much better ignition, while keeping the Mopar look, and leave your factory harness unmolested. Jumper the 2 ballast terminals together (0.5 ohm side if a dual ballast, you won't need the 5 ohm side). You can then run a hotter coil, like an e-core, and open your spark plug gaps to ~0.045".

That photo of the MSD box with the in-distributor ignition module is hilarious. Did an owner do that, or was that a clever Chinese copycat solution?