HEI in Mopar ECU casing
It all sounds pretty reasonable as to what Matt has been telling you, but I would add a FYI.
Those little metal inserts in the HEI module are floating and sometimes don't conduct the ground unless they are squeezed down enough to make a good contact with the backing aluminum.
Bolting the module down to a backing plate/heatsink should be sufficient for that.
Here's a wiring comparison for you.
Your plugs should be sufficient but need to have the gap opened up to around .045
It all sounds pretty reasonable as to what Matt has been telling you, but I would add a FYI.
Those little metal inserts in the HEI module are floating and sometimes don't conduct the ground unless they are squeezed down enough to make a good contact with the backing aluminum.
Bolting the module down to a backing plate/heatsink should be sufficient for that.
Here's a wiring comparison for you.
Your plugs should be sufficient but need to have the gap opened up to around .045