Hey guys so I have a 2012 civic si. I had two 12inch kickers installed with a mono 300 rms amp. Everything else is stock. Of course now I have overkill bass that overwhelms the stock speakers. I installed aftermarket speakers but now I have no bass from the interior which is what I like more than bass coming from the trunk. Now my question is what would be more cost effective, buy an amp for the subs and interior speakers. Or buy a separate amp just for the interior speakers?