it will work, but you power output is a little low. i run 800 watts to 1 type r. go ahead and hook it up, just keep your eye out for a new amp in the future
find the rms of each sub, 400 for each sounds pretty weak, just sell it and go with a 1200 or 1800 watt if they can handle it. If your going to pay money and stick it in your car, make sure its going to sound powerful and hit hard.
peace