Yep, they look fantastic. There was a post up a while ago about one a z4 in the US but it was also on airbag suspension. I'll have a look for the link but am pretty hopeless with search.
Found it,
http://z4-forum.com/forum/viewtopic.php?f=2&t=29553&p=402843
Its not everyone ones style, I think it would look better on regular suspension and wouldnt mind a set for my Z.
