Hi Guys super short time lurker first time poster. Got super lucky and had my moms 2014 Regal T fall in my lap recently, love this cars everythings perfect except for i wanna install my amp and subwoofer from my previous car up, im a basshead i cant live without. I took it in to bestbuy's geeksquad to have the do ths install and after 2.5 hours i get a call back that he cant find a point to splice the RCA cables. we couldnt find anything on taking out the headunit because the cars so new. oh sorry forgot to state earlier that this is a lease ): is it possible to install the sub with no permanent damage? thanks so much guys.