Donovan

I'm considering buying a 1977 280z but I know very little about Nissan z(s30) cars except that they are very cool. The car isn't running but is very cheap. I'm curious about what to look for, the current owner claims the car ran when parked two years ago. I have worked on other cars (a lot) including small block Chevrolet and I understand that there are engine swap kits available if the current motor is shot. Just looking for some information anything would be helpful. Keep in mind this is my first z car project but I'm a fast learner.