Well my older cars didn't fare so well at thise mileages, but usually weren't to the point of needing head work (maybe because I loved the big V8 'murican cars)
Of course I ripped into some of those anyway "MOAR POWER!"
my last car, a 2001 Lumina, was running strong at over 300k
Of course I'd never think of rebuilding an engine in that, like you said, good used engines available at the scrappers
Dunno the mileage on the Ranger, the odo doesn't work