Dear Brother, I would strongly urge you to go for a LC with 3B or 3L engine in this model as these are reliable engines with great sturdiness and proven performance over long periods. They are simply engineered so most diesel mechanic can repair them even with simple spare parts even in a wilderness.
The 1KZ and the 2LT are both turboed as well as EFi. They are no match to the 3B and the 3L in terms of reliability and engineering. They have a frail legacy as compared to these two proven beasts. They are more thirsty in terms of fuel and require more maintenance. Although the 1 Kz will give you a higher pickup in terms of acceleration. Both these light duty engines are also not as useful in terms of towing loads when compared to the 3B and the 3L.
However, please keep in mind not to buy a vehicle with any sort of alteration in terms of engine, gearbox, or body. The vehicles with 3B will have a code starting from BJ and the ones with 3L will have a code starting from LJ. Further scrutiny of the registration book will reveal their true state of affairs. Hope that you are able to find a good one.