That box only has .86 cubic feet of air space per sub, the Comps require 1.25 per sub. That box will work but not with his subs.
Size (IN.,CM) 12, 30.0
Impedance (OHMS) 2, 4 or 8
Max Rec Amplifier Power (WATTS PEAK/RMS)* 300/150
Sensitivity (dB 1w/1m) 88.3
Frequency Response (Hz) 27-500
Mounting Depth (IN.,CM) 5-7/8, 14.8
Mounting Cutout (IN.,CM) 11, 27.9
Min Rec Sealed Box Volume (CU. FT., Liters) 1.25, 35.4
Max Rec Sealed Box Volume (CU. FT., Liters) 3.5, 99.1
Min Rec Vented Box Volume (CU. Ft., Liters)** 1.75, 49.6
Max Rec Vented Box Volume (CU. Ft., Liters)** 2.25, 63.7