It was a nightmare to get on mate. They cut, shut and fitted it with the bumper off the car so when the bumper was in place it pulled it enough to crack it right along the back. I had it fixed but since then its cracked again and a few lazy pratts have scuffed it too. It still looks the pooches plumbs tho! (from a distance)
Theres a company here in Spain that do an exact replica of my bumper, without the number plate recess. The whole kit (front & back bumpers/skirts) costs just under £300. Let me know if you want their number. nedbeard@yahoo.es
Unless you can try something against the car at a shop its difficult to know what wil fit the Clio easily. The Rieger Bravo diffuser what a bit of a gamble really.