It's 2:26am Do you know why my car wont start?

johnparts said
The mismatched pcm ran idled and took a custom tune.

There's a few of the details im missing.

What year was the Magnum?
What's the year and calibration ID of the Srt-8 PCM?

I've been going over the 06 LX service manual and although it alludes to mismatch PCM/VIN causing "Crank but Stall" condition its not real clear.