Electronic Conversion Kit

On the advice from a buddy, I purchased an Electronic Conversion Kit, I guess as an upgrade. I have a few questions, but will just start with this.. My car was already electronic ignition, although not running when purchased.
This is the only "box" (photo attached) my car has and the plug comes right out of the harness. (2 prong). The original distributor in the car has the 2 plug wires coming out but I can't find in the harness or anywhere else it plugs into. Does that distributor plug go to another box that is just missing from the car..? View attachment 1716342765View attachment 1716342766
Okay, you say it was already electronic ignition when you got it- let's see a picture of the distributor that WAS in it. I have a sneaking hunch it was an MSD RTR or Fleabay Skip White all-in-one distributor (one wire hookup), and all the connectors for the factory ECU, distributor, and ballast were removed from the harness.
In which case you'll need to figure out what's been done to the harness, and where to splice in the harness from the new kit.