I figured it out... I KNEW I had seen this car on the forum somewhere before, came across it when I was trolling the member galleries one day. It belongs to forum member marcosaxo and he has several pics of it in his galleries.

marcosaxo Gallery - CrossfireForum.org Gallery

And I figured out where the sideskirts are sourced from. CarId has them for sale, the manufacturer is Extreme Dimensions. $247.20 for a set, not too bad.

Extreme Dimensions® - AMG Style Side Skirts - 2004 Chrysler Crossfire Body Kit