Size of screens for headrests?

[Mirage-]

Anybody know off the top of their heads what size screen will comfortably fit in the mk2 headrests?

I've got a 8" screen for my dash and looking to get screens in both rear headrests too but with enough space to create a custom mount screen/ps2 controller setup so that controller plugin points are easily accesible.

Thanks in advance

Ian

[Mirage-]

Nevermind, bought them now.  2 screens and a dvd unit, only 4" screens but I don't sit in the back so who cares?  

Ian