Thats because what Combatants has written is slightly inaccurate!
The first generation Prado's were sold in Australia as the Bundera.
In Europe they were marketed as the LandCruiser II, everywhere else they were sold as the Prado.
They were never sold in the USA.
The KZN model he is referring to is a KZJ70 (which was still sold under the Prado/LandCruiser II name) which had a Toyota 3 litre turbo diesel 1KZ-T engine, hence the KZ in front of the J7.
They were also sold with the L, R, B and F series engines, hence LJ70, RJ70, BJ70 and FJ70.
70 was the short wheel base, 73 and 74 were mid wheel base models and 78 and 79 were the long wheel base models.
So for example an RJ73 was a mid wheel base model with a 22R petrol engine.
