Round back to square back alt

Thanks for all the posts. I think I need this dumbed down.

My 66 bcuda currently isn't running and I am doing the alternator and some wiring while I'm doing it. Do I got a high output alternator, I removed the amp meter and it will get a volt meter instead. I plan to remove the wire that feed the ampmeter through the firewall and that fire hazard. And the fusable link is now a breaker.

I plan on using a higher gauge wire for the alternator power. But now I'm looking at wiring harnesses, do I need electronic ignition? Are their other components I haven't realized I need to replace with this electrical update? My goal is to bring some of the functions of a modern car with minimal updates that change the feel of the original vehicle.

Those additions, Hidden Bluetooth stereo with amps, electric fuel pump, adding the rear defrost fan option, hazard lights that mine doesn't not have, and with some luck a back up camera with a hidden screen that I got mounted in the flip down ash tray.

I'm currently looking at wiring kits, particularly for the engine compartment but like the idea of keeping the original bulkhead connector and running heavy gauge wire to the fuse box separately. Has anyone got any recommendations with that, or a good modern fuse box with added circuits that will mount cleanly into the original kick panel area?