it corroded. And they knew it would eventually corrode. Had they screwed the fitting in, it would have been easy to replace the fitting. But it did last 20 years. So what the rest of it is about how I drilled out the broken old fitting and cut new threads into the hole and replaced the fitting.

Go ahead and buy the F250. You did say F250, right? You wouldn't want a "gentleman's F150" those are toys. Repeat after me: F250, I want a F250.