Yes, they do tend to be a be a bit on the rare side as most 406 Coupes in breakers end up there because they've been wrapped around lampposts when their drivers ran out of skill or the handling of the car found it's natural limit. Certainly the vast majority of Coupes I saw in the yard were somewhat structurally modified by aforesaid lampposts and other assorted solid objects.
Would it be right to say that the V6 Xantia/XM is likely to handle better and more safely than the 406 Coupe or is that fighting talk in some quarters?