Ive got a box that fits down inside the hatchback well of my 91z28. The box measures 24x11x11 and it is sealed. It has 1.3 cubic feetof air space inside of it. I need a good reasonably priced sub that will sound good with a Kicker KX600.1 amp running it. The amp will put out 600RMS at 2 ohms and...