impossible. had new head unit install done by stereo shop therfore i had my stock radio out. the huge black trim piece is a part of the radio and cant be taken out while the stock radio is in the installed position. it's held by several screws and clips that wount be accessible w/o removing the radio itself. and to remove the radio itslef.. good luck, i've seen the shop's guys do it and it's a bunch of interior pieces taken out b4 you can get to the screws holdin the radio itself.. therefore, i suggest you bring that to a stereo shop.