I have never even heard of that. That is freakin cool and the pictures look great. I have no idea on the fit and finish. I assume it would be like any kit where it would take a lot of time and money to fit it and make it look good. Hopefully someone here knows about the kits.
Agreed... c4's are nice cars... if you want a c5? well... best thing to do would be to buy one.
It'll look like butt anyhow because the wheels are closer to the corners on a c5 anyhow so close your eyes and imaging one of those Ferrari kits on a stock frame Fiero...