Whats up guys Iam new so bare with me. I have A memphis 1500w amp mono on 4 kicker cvr 12 in sealed box and want more power I want a Btl 18 or a mojo 15 or what do u guess say would be good for that amp and its in a 1992 buick Roadmaster yes big trunk I want deep bass and only listen to rap so need lows. please help guys. thanks