hello everyone. I’m from Ontario, Canada and decided to join this forum to ask some questions. My dad has some horn on his expedition and i had a small set on a 1992 caddie that I had. I loved them. I just got a dodge caliber and I was wondering if anyone had any experience with installing horns on one. Anyways glad to be here. 
Never done a car install but depending on how crazy you want to get you can either mount shockers under the car seeing as they are individual trumpets or buy a K3 and do custom seperate mounting brackets. Also you could cut the boot of the car out and face the horns down(depending on how creative you want to get) then simply finish it uo with compressors and tank mounted in the boot. Hope this helps
Welcome. I can’t help with the install but I can help with compressor questions!
Welcome to the Forums. Hope you enjoy your stay.