instead of hiding your amp why dont you build another stealth box on the opersite side and if you put a perspex window in it you can mount the amp upside down with the cover off and light the whole lot up with leds... this will light up all the insides of the amp... just another option for you to consider... remember if you build your box to your spec with the right amount of volume, and then you screw your amp in your amp will reduce the amount of volume left in the box...