should i buy a 280zx need advice and opinion

Im thinking of buying a 280zx 82 model, the body is in good condition from the looks perspective. I need to know what things are likely to go wrong with the car in the future, if it is expensive to buy parts for in Australia, and what to look out for if i decide to buy the car. They are asking $6000. Also just all around general information about the car. In addition how much would it cost to refurnish the interior. Thanks for your time.