Ok so at this point I am going to wall my 1998 toyota corolla. I have been there a couple ideas on what to put in it and I have set my sights on 2 dd 9518's. I am talking to the DD dealer and he thinks it will be too congested, and that 4 12's would be better or 2 15's. I am not sure what to think. I couldn't really find and specs online for rec cubes for each sub. ***Below is link to box design, it is 12.5 cubes @37hz
NEW218.jpg picture by Sketchup489 - Photobucket
NEW218.jpg picture by Sketchup489 - Photobucket