1972 Plymouth Valiant 225 Ignition Coil question

[Mattax]

Honestly, if those wires are good I'd leave them alone.
Splicing and running wires looks easy but is not a good first project. A lot of problems we see here at FABO trace back to modified wiring.

Just from this week here's an
example

another example

 

[67Dart273]

It MAY be just as good as it was off the production line in 1972