re front valance. its welded on. not a very big job for a bodyshop or if you can weld. they do rust pretty badly though. usual trick is to rub them down as best as possible (as long as there are no holes) and spray with grey/black stone chip paint. doesnt look too bad if the bumpers are already black/grey. for a six quid can of spray (its a rubberised compound, not a normal paint) it may be worth a try?