MSD-5C

Yes please refresh/ re-read my original post it is "heavily edited." Again, it appears the 5C and 6C are fundamentally different. It APPEARS the 5C is basically an MSD-5 which is similar to a Mopar ECU, and that a 6C is a CDI box

Found this from the Holley forum:

msd-5c

The MSD 5C was designed for direct plug in to a older model Chrysler ignition, it is similar in specs as the current MSD 5 Series Ignition PN 5200, which you can find in our website. We no longer have this style of connector, but you can obtain a wiring schematic if you call in to our tech dept. at 915-855-7123.
Thanks,
msdtech2