Hi.
I am redoing my whole car (tuning DIY style) and I have my basic cabin speakers covered (2way 6.5" and 6x9) and 12" in the trunk covered, however i have a spare amp laying around, its a mono block rated at 400rms @4ohm and 800@2ohm (it may pull 600rms@2ohm clean- little overrated), and I was thinking about putting it in a good use, so I was thinking about 8inch (if I'm wrong right here please let me know, i was thinking about crossing it at 60hz-100~120hz). thing is I'm driving a civic coupe, so space in the cabin is quite limited, the only place i could fit somewhat of a sealed enclosure inside of the cabin it would be in the place of the back center column(behind the hand break). other than that, it will have to go to the trunk (the whole layout concept will go to the garbage since there is no space for another box there with my current design).

If anyone has experience with location of the mid bass (or even choosing the driver) please let me know if my concept is correct, or You may suggest something different. I am open to ideas since the car is not finished yet and its all concepts now. thanks, Luke.