I have the Wolo air horn, and It is big, to big for the same place as the old horn, I am looking for a good place to put it, got the front end off, and I may put it under the ignition switch on the right side,. there is a space inside there, will have to glue a bracket to mount it on, ABS glue is strong , I hope, one other spot is on the outside just over the rad. behind the front wheel,. don't know how long it would last there , are they water tight,