Ebay water pump does $1000 in damage.

Thought the OP said Dakota.
The word "pickup" must have thrown me.

Mine is a 5.9.

Dakotas are notorious for cooling system issues.
Not sure about gen IV or the ".7" engine family
Mine has been better since the heater core finally let go and was bypassed.

All in all, though if I had to choose what kind of chronic issues my vehicle was going to have, it could be a lot worse- like timing chains or oil pumps.

At least the radiator (on #3) and water pump are relatively cheap and easy to replace.
Mine also has a history of eating belt tensioners.
Again, could be a lot worse things to change out as frequently.

I always sing the praises that this truck has been the most dependable vehicle I have ever owned.
It's fairly easy to work on, as well.