I have the 1988 4.2TD and its not very economic to drive and yet pretty gutless. If you must have one get a 4.2deisel turbo'd one, avoid the 2.8turbo they are awful engines.
Issues,
The driver side doors tend to rust badly and a second hand one can cost $500 if you can get one. rear of sills also and firewall.
Steering gear can be best described as like a Peruvian rain forest in its ability to leak fluid.
Seals around the windows leak with age and the rear ones rust badly.
Alternators are fine until they need overhaul and then the seals on the vac pump always go quickly afterward, so dont bother getting one overhauled as brand new alternators with pump are fairly cheap on TM ($500).
If injectors need re-tipping, bye bye $900, injector pump $900~$2k.
Bearings on water pump go but a water pump is cheap ($170 ish).
Winch snap pins are obscene money at $40 odd each, get a mate with a lathe to make them for you, carry 3.
Keep oil in the gearboxes (seals leak a bit) and if you have a rear limited slip diff use the right LS oil. Also If you have a LSD be careful in the wet at 90degree junctions as the LSD cuts in suddenly and you can spin out, even with a gutless engine, hairy to say the least.
Good points they are very tough, and a lot of fun, just need more power.
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