I have 2 15" kicker L7 2ohm dvc I want to power them as much as I can. I already have a 4 channel amp. so I would prefer a monoblock put don"t know how to install 2 subs into 1 channel. .I have a 92 accord stock alternator so I don't know what is the max rms power I can get so that the battery does not die on me. Any suggestions on any parts or on install?