230hp vs 260hp

[EXMAN]

Does anyone know what Ford did in 99 to increase the hp of the 5.4 from 230hp to 260hp? I'm hoping that it's bolt-on and not internal.

 

[FoMoCoExPy]

> I believe they changed the head and valve(size, not number of them) a bit for better breathing.

you could say the unleashed more pony's from the same sized engine..