Sorry about this, I just seen it for the first time. You probably could go over to face book & look up the TT racing page ask on there.
Not many using the Tri Tracks anymore, but probably some used ones a rider may have laying around. I dont have any myself, all I have are the RD12 square tread.
You say for display, is it for the Hoosier name or that tread pattern ?.
Neil