Oh, indeed, sorry I didn't find it.. It's a very nice looking car, but unfortunately as Schifty031 said there isn't a way to change the carshape of the car, therefor that "skin" or "mod" is not what I'm looking for. Here's a picture to show what I'm actually after:
http://media.riemurasia.net/albumit/m00/593852251.jpg <- As everyone can see, FIA has made teams remove almost every wing that was beautiful in these cars. In my opinion the last 'real' season was indeed 2008, after which most of the beautiful wings were removed (and this propably affected the downforce levels aswell). Also the V10 engines were incredible, without DRS or KERS Kimi Räikkönen topped 370,1km/h with his McLaren during the race in Monza 2005.