Me and my buddy just built a in his trail Blazer from the C-piller back, It was 15 cubes and had 2- 18" Team Rockford Fosgates with a RD 7500.1 with a 16v system running at .7 ohm soo pushin close to 10,000rms, the wall we built had a 32x6 inch port but what we got to found out was that the box...