The 17 BRZ head unit is horrendous. And the speakers aren't much better. Blue tooth took upwards of a minute to connect if that quick. So I replaced head unit and all speakers in the car and added a 12 inch sub in the back. sound deadened the car and it sounds much better. I just added the JL audio TWK 88 and now sounds even better that I can tweak each speaker individually. The only down side right now is the Kenwood ddx9904s just doesn't fill the whole opening. I know Carbon Car Systems in Australia does sell the trim ring for the aftermarket radio.
http://carboncarsystems.com.au/shop/...rz-facia-2017/
here is that link. Not sure if 130 plus shipping is worth it if I can do some playing around with ABS myself.