I have used a Ron Francis kit:
Ron Francis Wiring
And a Kwikwire kit:
Kwik Wire - Electrify Your Ride | Auto Restoration Wiring
These are both good kits to re-wire a hot rod or project. I used one for a 1948 Power Wagon that was originally 6 volt, cloth covered wire. And a 1942 Dodge Carryall that had no wires left at all..
Having done this twice, I would recommend you keep your original fuse block with factory style bulkhead connectors, and just add some fused wires off the starter relay (always hot) or one of the alternator field wires (hot when running).
If you do want to replace your system you can place it anywhere, but you will have a big square hole in the firewall to deal with. These kits have wires that are printed with each destination; e.g oil sender, coil, alternator, etc. this is nice, but they do not have bulkhead connectors, so you have to bundle the harnesses thru the firewall (engine harness & light harness). You could cut and terminate each wire into your factory bulkhead connector, but what would be the point of that?
If there is a kit out there that has bulkhead connectors, it is probably GM based. You may/will run into issues with your steering column connector, dash harness, connectors, and rear light/body harness.