1998 F-250 LD 5.4L 2V - 238,000 Miles, still runs very strong.
Helicoiled 2 plugs, swapped exhaust manifolds for shorty headers, had issues on and off with COP going bad, otherwise it's a champ
2005 Expedition XLS 5.4L 3V - 82,000 Miles. Runs very strong. I just bought this truck a month ago and have already fallen in love with it.
1998 Explorer Sport 4.0 L V-6 - 276,000 miles. I know it's not a modular engine, but I'm still proud of this little Explorer. Change oil every 3,000 miles and swapped out a trans at 175,000, but the engine is all original.
1998 F-250 LD 5.4L 2V - 260,000 Miles. Has pulled trailers and been worked since he bought it and it has been a very strong truck for pulling. Has had to replace plugs/COP's, but has not had any major issues, just regular maintenance. He'll probably run this truck until the body rusts out around the engine.
Given my experience running the 5.4L Triton over the last 10 years, I would gladly go buy another one provided it had maintenance records to prove that it was taken care of properly.