I like my GT-40p's
I am almost ready to put mine in the car. I would suggest getting the bare heads and putting good springs and valves with them. I replaced the springs on mine with Crane Cams Conical ones. The GT-40p heads from Frod Racing comes with standard production springs and locks with rotators. They are limited in lift to about 0.500".
My GT-40P equipped engine

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Bobasaurus
1987 LX 5.0 - Engine Rebuild now installed - 26290 Wonderful Miles so far
Items now installed from the garage : GT-40p heads, Explorer Intake, FMS "P" headers, Crower 15511, SFI Balancer, 24#, SPEC Stage 1, T5z, 65MM TB, 77MM Pro-M, 255lph Pump
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