Advice on buying a Rocky

Hey all. I'm looking for a bit of advice. I have been looking at 90's Daihatsu Rocky's for a while now and I really want to buy one some day. I have seen a few reviews about them but none that i've seen go further than "1.6L petrol/2.8L diesel" and "it's a nice 4wd". Has anyone here had any experience with them? Is there anything i need to know about them? Anything that goes wrong faster than usual?