Alright, I have about $500-$600 to work with and I want to buy some subs/amp/box for my 94 Honda Accord. I don't need a ton of bass, but I want to be able to feel it. My friend was thinkin one 12" would be enough. Will it? Now just need some suggestions on stuff I should get (amp, box, sub). Also, will I need to replace my stock speakers? Thanks