Finally finished this dio after finding a FM Speeder to finish it off. Everything worked out well with the Woodland Scenics snow and cellulose mache for the base. Good fun getting this thing worked out. Thanks for lookin.
I think it was SMT that used it for that piece if I'm remembering correctly. They made a much larger model than was available previously and decided poorly, IMHO, to use that DM piece in the rear.