I have the JVC KD-G300 head unit installed but I am looking to replace the factory speakers. I have found that the front speakers are 6 1/2" (not sure if the speaker has to be shallow or not) but for the rear, some websites say 6"x9"and others say 6 1/2". I haven't gotten a chance to look at the speakers themselves so I figured I would ask here.

Also, could anyone recommend a pair of speakers for front and rear that would be inexpensive but great quality? I'd rather not shell out money for an amp or sub, so they have to have bass and must be able to run off my JVC head unit.

Thanks,
Chris