My horn has been sounding pretty anemic lately(japanese cars have pretty pitiful horns anyway, IMHO), and I figure I need to upgrade as the horn sounds like it's on it's last legs. What have people put in their Classics for upgrades? I was looking at a 135db "import replacement" horn in JC whitney that is just about the same size as the Classic's stock horn. What is the difference between a high- and low-tone horn? Can someone give me an example of each, if possible? Also, anyone have those 12V Hella air horns installed in their Classic? How do they sound?