[240 2NR]

Seems like overkill. Unless you're going to go crazy upgrading your mid and high end, you're going to have a very unbalanced system, not to mention how much space and weight it's going to cost you. A good 10 or 12" sub is plenty in a car as small as a 240. I don't even know anyone with a 15" sub in their house. I have heard some and while nice, are almost always huge. Give me a nice tight 10 over a sloppy overpowered 15 anyday.