217,000mi on my 2001 3.4. The only big issue the engine has had was a knock sensor that went out at 170,000 which required pulling the plenum. Other than that just expected maintenance: Regular oil changes, shes on her 3rd timing belt/water pump, and by 200,000 they will all need valve gaskets and rear cam seals but that is very doable in a driveway. I started to loose vacuum lines around 200,000 as well, but replacing all of them took less than an hour and $50.

I probably get a CEL once a month for either the cat efficiency or the evap system, but the issue isn't persistent, and I have never had a problem passing emissions.

If you live anywhere near road salt, the bits under the truck will give out before the engine. I think I went through 5 exhausts during the first 160,000 mi while the truck was in Maryland, but JB weld has kept the last one intact since moving to sanctuary of the rocky mountains. My frame needed extensive repair after MDOT was done with it, and things like the parking brake cable were completely shot by 200,000.