The engine is capable of huge mileages but can suffer from corrosion problems generally associated with alloy units. watch out for blocked radiators too.
cars rot merrily so make the normal checks of floorpans, sills, wings, wheelarches and floors. Be particularly careful of the area around the rear spring hangers.
Unless the car is immaculate bodily, think very carefully before taking on an example with a sick interior, as refurbishment will cost you a small fortune.