I checked the piaas out and they look compatable. my recommendation is to write them a letter and ask them any questions you have. If yo just buy a single horn it will be easier to install then If you buy a dual horn kit you might have to drill. When I did my hella super tones I had to add a ground to each horn, then I ran a wire that I spliced into with another wire that I ran from the factory horn wire harness to the horns. I would probably recommend a wiring kit you might just be able to use the factory harness don't fall for the kits with the 12 volt relays check out grim speed or sick speed. Btw the Pisa sound is awesome I might have to get a set.