First and for most hey everyone I'm new to the forum, even though the Expedition is my wife's ride. Anyways I have a question for all y'all audio gear heads. I have 2 diamond audio 6.5 component subwoofers (as I was told they where. I paid like $10 for the pair), and I was wondering how hard would it be to modify the factory mach audio 8 inch box to fit both of them in it? Current mach sub is pretty much blown out, and my 10 inch Sony Xplod in a custom ported box is too loud for my wife. (I honestly think it's under powered since it's running on factory amp, but it's whatever. If she wants it to be toned down I'll do it for her.) How hard would it be to do something like this?