Ok guys... when these ign modules first became popular they slowly changed from this application to another. We identified them by the color of the plastic grommet surrounding the wire entry into the aluminum case. As I remember the first module had a blue grommet and the second was brown..

So here is what I suggest. Maybe looking at the color of the grommet and looking at the plug itself.

As I remember this conversation started with the dist plug not plugging into the loom of the jeep! That alone may be changable by swapping out the electronic pickup inside the two dists.. If that is doable then the thing will plug into the harness and the purple and orange wire may be addressed.
Big JIm <img src="/forums/images/graemlins/pfft.gif" alt="" />