Saw this link on the German Tmax-group site.
It's very expensive and a bit dangerous, I reckon.

http://www.deprettomoto.com/item_detail ... rca_moto=2

I had a large original mk1 screen and cut it down to about that height and the de-cap thought often annoyed me. I have cut it down to sports size now and feel much more comfortable all round. I wouldn't go for aluminum.