I just pulled the engine on my 2 seater 1980 280zx, it was clean. now I am ready to drop the 79 in the compartment. I will tell you what she started cuten me up when I was under her, but I got everything loos, and that engine came right out, I think I am going to put high performance parts in the 1980 engine, and use it when the 79 gose out.