how can i tell if i have pi heads the guy bought the car said it has the pi heads but im not sure i know i have the pi manifold but can anyone help me identify the heads if theare the real deal thanks for the help....

 

Either look at the intake ports (which should be squareish if PI, teardrop if NPI) or pull the valve covers and look for PI inside.

 

PI = square intake ports, Non-Pi has a "tear drop" shapped intake port...also there will be some casting #'s on the head that I can de-code or there might be a sticker on them wth the markings "PI" but wth the engine in the car it might be hard to sea