I've been trying to find a better picture of the C7 but can't, anyway, the kit is based around the 450 for2, as it's easier to get an older cheaper donor car as there are loads of for2's about, Smarts r us in Nottingham used to have one in the showroom, it was not the best finished off Kit car I have ever seen, not sure if they still make it as it was about 5 years ago I originally saw it, and have never seen one on the road, only as a demo car.
here's a link to a bit of info and a better piccy of the car,
http://en.wikipedia.org/wiki/Michalak_C7