swinters

Good day all. I am starting to restore my highschool 280zx but before I do I wanted to have all the parts in place for a soft rebuild on the motor. I always thought it was a 1981, but I cannot accurately determine the year from the serial ( HS130-227XXX) The sticker says 132 HP, I need to know if I have the dish or flat top pistons as these have different rings and gasket sets. Anyone know which pistons I would have, or do I just need to pop the head and find out.