Parts needed and compatibility

I'm going to look at a Magnum motor/trans out of a van to go into a 77 commercial chassis van with a 360 LA/727 combo. The magnum is injected (factory), and the 360 has a 2bbl carb on it.

I hope to just do a basically direct swap - no intake swap, no timing cover swap, etc. So it's given that I will need a high-pressure fuel pump, maybe a "pump on a stick". The 360 mounts should bolt directly to the Magnum, AFAIK. The Magnum is supposed to have been a running engine pulled out recently so I know the parts are compatible with each other.

What electronics will I need to run the injectors, ignition, and transmission? I also wondered if it just has a single computer/wiring harness or do I need to have multiple parts to get it to work? The more I read it seems I would need to add a bunch of sensors and rig things up to get it running, is that true?

I probably overlooked other things, so please speak up if you notice anything.

I'd really like to just do a straight engine swap but am skeptical because that would just be too easy for kind of luck I have.

Thanks for any info!!