On a positive note, it does look good, nice little modifications for air control could almost pass as factory, nice clean lines with trim and the chase to route the cord. You did put time and thought into your modifications to make this work for you.
But is this something that meets code or that I would personally use? No. But to each his own. Good luck.
But is this something that meets code or that I would personally use? No. But to each his own. Good luck.