dvd/sat nav upgrade
 

looking to upgrade my standard tape/radio unit on my 53plate x5

need some help in identifying all the correct parts/serial numbers

going to buy all the bit from ebay and retro fit myself, led to believe i need the folling:- head unit 16:9
dvd/sat nav unit
tv/radio tuner
wiring loom
i already have the 6 disc changer but dont know which models/serial numbers for the rest of the units to buy and which are compatable.

HELP HELP HELP

here you go