Audio Enhancements Sub Boxes

Anyone used thier products. The business that installed my stereo just went out of business. My old box has been ruined and I need a new one. I am thinking about buying the one below. I will have it rhino-lined. Just wondering if anyone thinks it will be a good box and last a long time. I am also concerned with the size. It is going under the passenger side seat in an Xstar

http://www.shipsound.com/Audio-Enhan...cf_p_7973.html

Good Box but don't know about fitment.