Easy to fit DVD players?

[jwl21]

hey,

in my old car, I had a JVC DVD player but the screen was so small it annoyed me (2.7'). Now I have my boxster I want to add some nice stuff to the interior. Anyone have any experience of adding a larger screen (6.7 to 7')? I ideally want a system that is all in one and doesn't have a screen that 'comes out' when u want to put in DVDs/CD, it just slides up instead. Are there any with removable antitheft screens too? Looking to spend about £400-500. Also, are they easy to fit i.e. DIY?

Thanks

J