floydv
Elio Addict
I agree with the prior suggestions regarding the Stebel Nautilus mini air horn. I put it in my smart in 2008 and it's worked flawlessly since then. I plan to put one in my Elio.
http://stebelengineeredsounds.com/nautilus_compact_horns.html
http://stebelengineeredsounds.com/nautilus_compact_horns.html