I did in 2006 silverflag with the group 4 .Have a look : http://www.youtube.com/watch?v=jt4MrHYhbjE
this year whe will start again with this fantastic car in Silverflag 2010
http://www.vernascasilverflag.it/silverflag/index_en.htm
http://www.cpae.it/
will have some fun like this