Building a racecar or summercar? All the electrics are way too old, there is way too much of it and even the fusebox is bit corroded?
Better to throw all away and make new ones. Reliability is better, so no need for unnecessary pitstops yduring race because something isn't working as it should. Power distribution modules are easy and reliable way to renew all the electrics in a car and all the fuses and relays can be left out, as they are not needed anymore.