I would start looking for an aftermarket in Latin America,I have seen plenty PZ's around and so far had more luck with aftermarket then oem on some yota engines especialy 1KZ and 2LT.
We've got a massive number of used Japanese import cruisers here in NZ. Pretty much every Toyota engine is supported by the aftermarket. Except the 1PZ: Toyota
People throw them out and bolt in a 1HZ or 1HD-T if they have major issues. The 1HZ is more likely to not be noticed at safety inspections and not require certification.

