well you could do a search...
and it would tell you it might work if you have the td4 auto, all you would need are the dash switches, steering controls and ecu. It might work if you plug it all in (as in gstuart), or it might need enabling by a dealer using testbook, or it might not work at all.
if it's a td4 manual, forget it as a bad idea.
best bet (assuming you have the td4 auto) is to slowly accrue the bits and pieces from ebay or similar, but be patient as there a couple of peeps from here after bits too.
good luck though