guy here had one with 2 E's in it, ports are tad to small if u have any power at all.. if u only have 500-1000 rms total it maybe better than other prefabs anyway.. i read the questions looks like guy will build to your specs if u message him, remember u can't just go by what sub company recommends, most subs like tad larger box than specs show and if u have big amp u can't just have min port area..