Good luck with that project as I know it can be a real PITA. In 65 I rewired my 36 one wire at a time and it was great fun. At least the tail light wires were continuous as the ones in my 36 were short pieces twisted together and then taped since the PO had installed 39 lights and didn't know or care much about wiring. When that wiring caught on fire I decided to rewire the whole car and I'm glad I did.
Fusebox, I seem to remember there were maybe 4 fuses since it was bare essentials, no radio or heater. With a pretty hot sbc with dual quads and glass packs who needs a radio and it never gets real cold in So. Cal.