Are you worried at all about the vents blowing hot air directly over the amps when the heater is running?
Other than that and the box (I'm sure it works perfectly fine, but damn it's ugly
), it looks great. You should try to find some matching carpet to cover the box and try not to transition the corners so much. Instead of the transition being so "perpendicular" from the box to the side walls, try to blend the edges more.