The heads that came with the motor were not PI. Below is one of the replacement PI heads that were purchased from Five Star Ford.
Valve Lift @ Zero Lash
Intake Lift 13.01 mm (.512 inch)
Exhaust Lift 13.75 mm (.541 inch)
Combustion Chamber Volume 43.95 ±1.5cc
Intake 44.5 mm
Exhaust 36 mm
These heads were not ported. Only some flash was removed.