Installing a GM HEI Module

I am trying to clean up the engine harness in our 1970 Dart. It was converted to a Chrysler electronic ignition at some point of its life. Apparently the person who did the conversion only owned yellow wire so every wire is yellow and they did a very poor job at splicing wires and terminating them.
So, I'm looking to clean all that up while we do our V8 swap. I've read about installing the GM HEI Module and had some questions:
1) Does installing the GM Module replace the ballast resistor and ECU?
2) Do you have to replace the stock coil to do this conversion?

Thank you FABO

ign1.JPG

ign2.JPG