HEI ignition module

Dart,
You seem to take many things out of context. Where to start. Have no idea which 5-6' wire you are talking about that has' inductance'. With a BB, I would mount the coil [ which I have done several times ] on the rad support/rt side inner guard...& that keeps the HT lead short. If the car has the factory ECU, it is probably mounted on the inner guard or f'wall & will likely have longer wires than a SB engine because of the front mounted dist on the BB.
Nobody said anything about mounting the coil 'far away'. A good place would be the f'wall or rad support, inner guard, depending on where the dist is. Canister coils use oil to cool them. Why mount them in the hottest place [ on the engine ] when they can be mounted in a cooler place???
You keep harping on about trigger cable length. There is no problem with the length as along as the precautions discussed previously are observed. Never have I seen in instructions for MSD or other brand CD boxes any reference to the max length of the p/up wires.