well, the question is how much bass do you want? if you are trying to get ALOT of bass you don't want them. And if you are trying to just augment the sound system in the celi with a nice amount of bass but not tons, i would recommend the infinity system available at any circuit city. see my profile for pics its called a "bass link", great quality sound, easy intall, and fairly small. sounds great in the celica, but its not going to produce a ton of bass.