Anyone in the mood to talk about stock type Mopar ignition boxes ?

The type of power transistor or whether it is visible should not be a factor in buying 'the box', in my opinion.

What is important is the electrical characteristics & if the heat sinking is adequate.
I always mount my ECU (when I run electronic ignition) in a spot where it does not mount flush. Where it will have an air gap under the box itself. That way it gets air flow all the way around.