Buying all new wiring this winter for the Duster- where to go?

I'm buying all new wiring for the Duster this winter. I'm tired of having the electrical demons I am facing right now with the car. So I'm replacing every harness this winter. What are the best harnesses and where's the best place to get them? Do they even make every harness? It's for my '73 Duster 318 auto. Cash is not so much of an issue (feels good saying that for once!) so I don't want to buy cheap harnesses....I prefer something reletively simple to install (basically out of the box and into the car type thing).