I think it is like fixing up anything. Everything part you replace or restore makes another part look older, so on it goes.
For me, I want to drive a brand new old vehicle to see if they drove as good (or bad) as I remember. Were they ever smooth running with that new car feel and smell? Did they ever drive straight. It seems like we would not have accepted a new vehicle that wanders back and forth.
That's a great looking truck, by the way.