Slant 6 HEI
... dont have the experience to do myself...
I wouldn't conclude that until you look at the many posts which document the HEI wiring. If you look closely at my photo in post #8, the connections are simply:
Red wire to +12 V IGN power
Ground wire to HEI mounting bolt (or just rely on the mounting bolt, but I didn't)
2 wires from Mopar e-distributor to HEI
Plug the GM cable from the HEI to the GM coil
Done
There is a white tach wire you can send to a cabin tachometer display, but not required.
There is a 5-pin connector for spark advance command, but not required.