Upgrading the electrical system in our 67 Newport Custom

Since we are redoing the interior we also want to upgrade all the old wiring etc while at it. I have been looking at complete kits like this from Painless:

21 Circuit Customizable 1966-76 Mopar Chassis Harness Part No 10127

Has anyone here any experience with this kit, or is there better solutions out there? We want to replace every wire and cable on the car.

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