Fiamm Road Master Air Horns - where did these come from?

I recently came across an old set of Fiamm Road Master MC/2 F1 air horns. The compressor is quite large and came with four trumpets. Two of the trumpets are metal, read read Tipo TA at the top, and you can see red anodized paint (identical to the Fiamm Road Master horns found on old Ferraris) on the inside of the trumpets. The other two trumpets are plastic, have Made in Italy molded on the metal ends, and are mounted to a bracket. Do any of you know which cars these horns may have come from and/or can provide me with the contact of someone who might know? Some photos can be seen at the link below:

http://autos.ph.groups.yahoo.com/group/maserati/photos/browse/b138