2008 Veracruz Limitted RSE

I just purcahsed a used 2008 Veracruz. I have the rear DVD entertainment system. If I purcahse a Huyndai Navigation Head Unit on Ebay of from a junk yard will it work with the RSE in my Veracruz. If yes please point me to the model number of the unit I need to be looking for.

Please help..

Also I have the brown leather seats. Does anyone know where I can get 1 front row headrest and 3rd row head rest. (brown leather. Please please help