dixie horn installation help

i wanted to know the place everyone puts them i got a slant 6 i want to be able to mount it somewhere out of the way so i can get to everything without braking them i also thing under the car they will brake so idk if there is a safe place i can put them i was thinking trunk i know i the driver would hear them being played but i'd rather have them in a place where every one out side the car could hear them i would like it to be quite loud to lol i am also going to mount a PA for my CB somewhere to

Thanks
Connor