This guy has fitted a 197 front end, on page 7 you can see him fitting it.
Looks really good, as for the back end I dont think that would be possible because I think the rear quarters are wider than the standard mk3.
http://www.cliosport.net/forum/showthread.php?t=332106&page=7&highlight=mk3+euro
theres a kit on the internet somewhere which replicates the 197. looks exactly the same front and rear, just not as wide.