A quick google search turned up some results, seems like they are available..here is a few examples I came across
Cheaper;
https://usdieselparts.com/i-2406922...e-5-9l-6-7l-cummins-diesel-2500-3500-4wd.html
https://www.rockauto.com/en/catalog...2,electrical,power+supply+module+(tipm),13581
Probably the best option if you plan on keeping the truck;
https://store.mopar.com/oem-parts/mopar-totally-integrated-power-module-rl692116al?c=Zz1lbGVjdHJpY2FsJnM9cmVsYXlzJmw9MSZuPVNlYXJjaCBSZXN1bHRzJmE9ZG9kZ2Umbz1yYW0tMjUwMCZ5PTIwMDcmdD1zbHQmZT02LTdsLWw2LWRpZXNlbA==
Please make sure you check comparability of the links I posted with your specific vehicle.
Yes, the VIN gives him access to the build sheet and there he finds everything he needs.
That's how it works today, for parts and everything else around the vehicle, it all goes with the VIN and only with the VIN.
And by the way, you are the one that asked for help and advice, don't blame me for try to help.