i have some vibe 6x9's in the shelf but im tempting getting creative with the rear plastics and using some fibreglass, some hertz front speakers which sound good but has no depth due to toyota's silly idea (HMMM lets make music sound wank and point the speakers to the floor haha) and a false floor which has been sealed up with a square kicker. i do have an amp powering it all and doesn't sound bad tbh.