i have a 91 camaro that im wanting to put a sub in, i wanna know if this box will be too big, the box will be 18 inches deep, 26 inches wide, and 32 inches long, the port will be 12 inches tall 6 inches wide and 12 inches deep, using 3/4 inch mdf thats 8.666667 cubic ft. i wanna put 1 audiopipe txx be15 running on a audiopipe 15001d with 2 deep cycle batteries in the back, the tuning shud be around 33hz is this box too big for a single sub, i will be another one of these subs with one of the same amps, so in turn im asking is that too big for a single 15