“Will this fit in my 2001 audi a6 quatro 2.7t? i am looking for a touch screen built in radio that is new enough for blutooth and auxillary accesorries to acomodate the newer times,considering my older radio that is currently installed in this vehical.Will this product work in my car/fit properly? or what other products simalar to this one will ? Also what other installation accesories will i need to be able to install something like this?”