Sure, I guess. I usually work on "wind tones" the big bulbous horns from old Jags, TR3s MGAs etc. I have done a few sets of the 9H horns, but they have their own issues. They are riveted together, and so far I drill out the rivets, and thread the horn bodies and use filister head srews to hold them together. It almost looks right, but not quite. If you look on Algores amazing internet, you can find reprints of the horn servicing "manuals" from Lucas. They are not a lot of help, but better than nothing.