no one makes a custom fit box for your car yet... which will just be a matter of time.

In the mean time, might I suggest an Infinity Basslink. It is a 10" sub with a 10" passive radiator (a non-powered, motorless woofer that is driven by the air from the sub, which acts like a "port" without any annoying port noise) in a sealed box with a 200 watt amp built in. They are made to be used with EITHER an aftermarket system (RCA inputs) OR a factory stereo (speaker level inputs). When the speaker level inputs are used, there is no need for a remote turn on wire, the amp detects the signal and turns on and off accordingly. This makes this subwoofer very nice for newer Honda/Acura vehicles, as there is NO turn on wire comming from the factory deck (many other newer cars are like that too). The bass output is rather impressive from such a small box (taking up less than one cu. ft. of space) but it is definatly not something that will rock the neighborhood. It is great for adding some low end to a factory stereo.

They are under $400 and include everything to get you up and running (except power wire I think), they even have a remote volume control, so you can tailor the bass output to your mood or music.

**I swear I dont work for or sell Infinity products It kinda sounds like it though... h: