Having owned 2 Fg Falcons the sound was very poor. Additionally when adding amplifiers you get hissing inherent with these cars. The other problem has been that amplifying the stock headunit results in way less than optimal sound. The solution is simple..the Stingray Car Security fg falcon aftermarket single din radio fascia.
Just by adding a good aftermarket system to stock system will sound amazing. Our next level mod would be a subwoofer amplifier upgrade which will sound fantastic. I remember clearly a customer had us supply fit a kenwood media player and fascia to his car ..it blew us both away the quality sound it achieved.