I figured since I had this in my CX-7 maybe someone here could use it before I go via other websites to get rid of it. It is a 12 inch BandPass box by r/t. Connectors in the rear, you simply need a 12 inch sub and long enough wiring.

Dimensions 19 inches long, 15 inches high, 17 inches wide on the bottom, 15 inches wide on the top (plexiglass slopes backward slightly.)
This was in my cx-7 but I need the room now so I'm going smaller.

THIS WILL NOT FIT IN THE RX-8 TRUNK.

If I am out of line selling this here I'll glady delete the thread.

Priced $45 pick up (i'm in NJ), but if you want to pay for shipping I'll certainly ship it.

 

I like the cup holders on the top

 

It could fit in the back seat.