charger l7 box ported

Ok I haven't read any post with my exact problem answered. I have a 2010 charger. 2 12 inch kicker L7 subs with a zx1500.1 kicker amp. Subs are wired as a 2 ohm load and amp is only 2 ohm stable. When I first bought my subs and pre-fab ported box, port is on the side of the box. I pushed the...

Thanks for taking the time to help me out. I bought some 2 L7's 12 inch for a dodge charger running a 1500 watt kicker amp to them. Box was pre fab ported box ok quality fit my charger trunk nice but I think the subs should be hitting a lot harder. So I'm going to get a custom box made. What is...