Converting the screen and nav drive are straightforward, but not usually a cheap way to go. See http://www.xoutpost.com/articles/all...-retrofit.html for the how-to on a screen replacement and the nav drive is a plug-n-play swap from the Mk3 (CD-based) to the Mk4 (DVD based).

__________________

Xoutpost.com - where you come for the information but stay for the friendships