292 engine upgrades questions

[RichardJ]

>> HEI Modules will burn out if not given their full 12 volts.<<

That is not, I repeat, not true.

About 15 years ago I installed an HEI with coil-in-cap. When I added the AC, I changed it to the '75 inline six type with the externally mounted coil. I wanted the extra clearance so that the compressor could be a little lower.
Both distributors for all these 15 years have been running with the original ballast resistor installed. Voltage measured at the Bat input to the coil is only a little more than 2.0 volts lower than actual battery voltage. 14.5 volts at the battery will provide an actual 12.0 volts at the distributor.