to be honest last time I seen a demon body kit on sale the "side skirts" were nothing but little plastic things for just infront of the rear wheel wells and the front bumper went from the classic square headlights to great big round things.
Personally I was gonna use
www.andysautosports.com but I have never tried it so I can't really say how reliable it is but I found a body kit on their I actually liked for a fair price and me being in autobody wouldn't be too hard to accomadate it for the car even if it was a little awkward.