Yes, it's a separate discussion but I will say this. I love my 80 and don't question its reliability but I'm well aware that the head gasket is the Achilles Heel on the later FZJs with the giant inline 6.An occasional HG does not make this a "fragile" engine. How many of us abuse ours driving around built vehicles that are 2000lbs heavier than the day they rolled of the line? I don't ever think twice about putting the skinny pedal down towing up the mountain because my drivetrain is fragile?
But this is a debate for another time. No help to the OP and his original question/s.
I purchased a '96 4Runner back in 2002 with 50k miles. The truck is still in the family and my in-laws own it with about 260k on the clock. The 4Runner still runs like a champ while the head gasket on my '96 FZJ let go at 167k.
Leaving the fanboy-ism aside, FZJs have a problem with head gaskets plain and simple. But that still doesn't mean I'm giving mine up.