70 Duster rewire

If you are branching from the left front fender location to fans/HL/etc, why not use an auxiliary fuseblock to junction from? Kill two birds with one stone and troubleshooting those items have the fuses in one spot. I prefer fuses running to the HL/fans than fusible links.

The rest looks OK as long as you don't want to go to a NHRA track.

Don't know how the chassis is in the car. If it's frame connected, I'd weld a 3/8" nut to the rear rail and connect ground. Do some at front from engine to chassis.
If you have sensitive eletronics, ex. FI, run a ground wire forward to a junction point near the electronics. It will reduce the "noise" in your power circuits.