Here is what it looks like...the connector itself is the Weathertight type, 6-pin that is on the 6ALN box I think. There is also a single wire connector for the Tach signal. The Red and Black wires are power wires.

I have a nicely restored engine bay wiring harness that I do not want to hack-up. So my thinking was to somehow hook-up to where the regular 4-pin ECU (chrome box in my case) hooks up and just use a couple of these wires as per the MDS wiring diagram that I found for their 6ALN box.

Once I can confirm that this MP box is in fact the MSD 6ALN I can map all this wiring out that do very little splicing I think.