i want to upgrade my system to 2 or 4 btl 18".... right now all i got is stock alt, (2) 800cc batts, 50 farad stinger cap, hifonics 2600 , pushin (2) l7 15"s(11cubes slot ported 35hz) @ 1ohm..... my **** is loud and dont dim lights, but its sloppy as hell, i want some super duper DUPER bang...