Well the 08C car definitely suspect with the vin being yet so low. I think it should be somewhere around the 670XXX mark.
The other one, 05B made me laugh. I thought "oh what a nice change of pace a red RS Z", then I scrolled down and realized it was just poor lighting, and it really is another RS orange Z. Seems strange to have a bunch of pictures showing it red. It would make more sense to me to showcase the orange in the listing pic, and possibly draw more guys in that are looking for a orange car. Just my 2 cents