For the engine, you can reasonably expect double the mileage you're looking at with a good chance the inj pump and turbo will last that long too. Rest of the truck is the same as any other high mile pickup. Totally dependent on the care, maintenance and a little luck, lol.
But as said above, if you're in Mehico, just buy a newer one of you want and delete it.
Delete is removing all the emissions systems that require the ulsd.
You're a perfect candidate for it. Cost a couple thousand for everything to do it.
2016 Ram 2500, MotorOps.ca EFIlive tuned, 5” turbo back, 6" lift on 37s
2017 Heartland Torque T29 - Sold.
Couple of Arctic Fox TCs - Sold