I'll look up the part number again and see what else comes up for it. A Google search is what identified the PDC and PCM. It was in a plastic tote that I bought with a manual transmission.
Yeah, I'm leary of Facebook groups. There are some knowledgeable guys in the groups. It's pretty easy to figure out who knows what they're talking about. I joined the Magnum EFI swap group and it seems decent. I'll post the PCM and part number and see what they say.