Snubbie:
My desire was to get another truck that had the potential to go 300k and get 20mpg to replace my 95 Dodge Cummins (400k on it...motor is still good...), so I don't think that 200k is overly optimistic. I bought a 2006 SR5 in a pinch with low mileage to try for a couple years and then replace with a newer body to survive Michigan salting.
Based on your Ford, if you drive 15k a year and want to run 10yrs to 200k, then a 4Runner with 50k is your target.
My 2006 had 95k on it when I sold it and the only thing that went south was the electric switch for the rear window
