Well it is 38 yrs old, so depending on how well it was Maintained. it might be good, or it might not be.
Boats that old often have problems with any Wood in the Boat(floors, Transom), the engine, Do a Compression Test, Check that it has a Spark that can jump a 3/8" gap. Put a set of muffs on it and see it will start. If you buy it, first thing you need to do, is drop the Gearcase, replace, at Minimum, the Water Pump Impeller.