Full new wiring harness?

I used the AAW harness on my 62 Dart, $299, modern fuse box, all the wire you could ever need plus, alternator kit with the main power cable and maxi fuse. Bought the Packard connectors and used the factory plastic connectors, ignition switch, wiper switch, etc.

On my 67 a-body I bought a painless 7 circuit fuse box kit, integrated it into my existing dash harness, basically made the engine harness, extremely basic and simple, headlight relays/harness.
I did buy a new rear harness, it wasn't too much $, but did not include the interior harness.