I have an 01 kia rio, i want to build a wall where the rear of seat used to be, i

[chuck]

am installing a 15 re audio ? and 2 10" re audio subs. All subs are dvc, 2 ohm and 600 rms. Anyway... I want to mount 15 inverted and 10s reg. Is this a good installation for this sub, and do i need boxes behind the wall for the subs? Thank you very much.