I just put in my 3-10w6 subs and cutout the rear deck for my Polk Audio 6x9's. I am in the process of making some brackets for my 61/2" seperates. i am using 4x6 replacements that were cheap but sound way better than stock. I have to say that as is right now the car has awesome bass response, the 6x9's sound way better than when I had Infinity 61/2" in the back. Once I get the seperates hooked up the front stage will be so sweet. Seperates make such a difference. I have a Alpine digital sound processor that I basically have nothing to do with. If any one is looking for good bass I highly recomend the 3-10w6 JLAudio set up.