Well it came in and I got it installed. It has considerably more low end than the factory unit which I like. So far i like it. Wife likes it, too. Nice front sound stage and decent fill. Still playing with the limited tweaking capability (Bass, Mid, Treble, B Boost, and Loudness). What I didn't expect (and obviously overlooked when browsing the manual before purchase) was a SP SELECT feature:
(From Manual) "SP SELECT OFF/ 5/4/ 6 × 9/6/ OEM: Selects according to the speaker size (5 inches or 4 inches, 6×9 inches or 6 inches or OEM speakers) for optimum performance."
I spooked myself with it a little. To change it you have to remove the face and press the reset button and re-do the initial setup. Well, when I did and cranked it back up I was faced with bad engine whine and a loud repeating pop at higher volumes. Turned out to be the AUX patch cable wasn't fully seated.