Need help perfecting the budget build hemi swap

Item #1 is some type of ignition spark timing. Can the wires from this item be traced back to there source and eliminated ?

Item #2 looks like a voltage regulator, but only if it's related to me, because wouldn't that just create a confused alternator ?

Item #3 is a vacuum reservoir, is this important to the ventilation box under the dash board ? Doesn't the big door behind it open by vacuum ?

Item #4 is a vacuum operated heater control valve of some type, the vacuum line is headed into the firewall, so I have the same question I had with item#3 ?

Item #5 must have something to do with the /6 ignition system, can that be traced to it's source, and dead headed there ?

Than there's the Voltage regulator hiding behind the windshield wash reservoir.

I've had a 71 440 six pack Cuda, a 1973 Challenger with a stroker, a 1972 Cuda, a 1973 Rally Charger, and a 1969 Barracuda. Everything in this 1975, is much more elaborate than I've seen. It's all foreign.