Hey bud, i did install the hella's myself, they're a bit tight to mount where i put them but it is possible. the only thing you'll have to change is the wiring. because the hella's have two terminals each and the oem horns only have one each. so you have to connect the hella's in series. not hard to do should only take about an hour all up. hope that helps, PM me if you want to know anything else